﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2018v3.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2019-08-30T08:00:06-05:00</ReturnTs>
    <TaxPeriodEndDt>2018-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>350921680</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>CROWE LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>225 West Wacker Drive Suite 2600</AddressLine1Txt>
        <CityNm>Chicago</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>606061224</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2018-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>360724690</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>American Dental Association</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>AMER</BusinessNameControlTxt>
      <PhoneNum>3124402500</PhoneNum>
      <USAddress>
        <AddressLine1Txt>211 East Chicago Avenue</AddressLine1Txt>
        <CityNm>Chicago</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>606112637</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Paul Sholty</PersonNm>
      <PersonTitleTxt>Chief Financial Officer</PersonTitleTxt>
      <SignatureDt>2019-08-30</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Nicole Bencik</PreparerPersonNm>
      <PTIN>P00756195</PTIN>
      <PhoneNum>3128997000</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2018</TaxYr>
    <BuildTS>2019-02-21 02:37:17Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="10">
    <IRS990 documentId="IRS990" softwareId="18007697" softwareVersionNum="2018v3.1">
      <PrincipalOfcrBusinessName>
        <BusinessNameLine1Txt>Kathleen O'Loughlin</BusinessNameLine1Txt>
      </PrincipalOfcrBusinessName>
      <USAddress>
        <AddressLine1Txt>211 East Chicago Avenue</AddressLine1Txt>
        <CityNm>Chicago</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>606112637</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>196824498</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501cInd organization501cTypeTxt="6">X</Organization501cInd>
      <WebsiteAddressTxt>www.ada.org</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1859</FormationYr>
      <LegalDomicileStateCd>IL</LegalDomicileStateCd>
      <ActivityOrMissionDesc>Professional association of dentists that fosters the success of diverse membership advances the oral health of the public.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>20</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>18</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>457</TotalEmployeeCnt>
      <TotalVolunteersCnt>450</TotalVolunteersCnt>
      <TotalGrossUBIAmt>11479342</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>3293820</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>1083039</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>1233750</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>96430238</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>96048941</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>7457323</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>8297045</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>28163675</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>28199567</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>133134275</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>133779303</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>6052074</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>4817693</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>61861946</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>59070283</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>62193739</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>59936622</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>130107759</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>123824598</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>3026516</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>9954705</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>208742771</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>204160708</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>95458810</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>94392663</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>113283961</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>109768045</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>The ADA is the professional association of dentists committed to the public's oral health, ethics, science, and professional advancement; leading a unified professional through initiatives in advocacy, education, research, and the development of standards.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <Desc>Build a community for a professional association of over 180,000 dentists by developing and promoting member value, recruiting and retaining members, fostering collaborative tripartite network (national, state, local) provide leadership development, advance diversity and inclusion, and position ADA as America's leading advocate for oral health.</Desc>
      <ProgSrvcAccomActy2Grp>
        <Desc>Promoting high quality and effective processes for dental education, dental licensure and credentialing. This is accomplished through monitoring and disseminating information on dental education and licensure issues and conducting studies. There are also ongoing liaison activities with related organizations which also serve dental education and licensure including the recognized dental specialty certifying boards, sponsoring organizations, and allied dental organizations. ADA seeks to improve the quality of continuing education available for dentists "the ADA accredited 1,611 education programs and nearly 46,000 individuals sat for certifying exams."</Desc>
      </ProgSrvcAccomActy2Grp>
      <ProgSrvcAccomActy3Grp>
        <Desc>Develop and produce ADA's annual meeting which includes scientific programs, general audience programs, and hands-on workshops for dentists and their staff. There are also special events such as the distinguished speaker series and keynote address for attendees of the annual session. There is a technical exhibition (ADA World Marketplace) for attendees to experience and test dental products and services for use in their dental practices. In 2018, there were over 16,000 attendees, receiving more than 37,000 hours of continuing education, and 523 booths in the ADA World Marketplace. Also included, is ADA as the premier dental education provider by providing a continuing education program throughout the year that is comprehensive and integrated.</Desc>
      </ProgSrvcAccomActy3Grp>
      <TotalProgramServiceExpensesAmt>0</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind>false</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="IRS990ScheduleB">true</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <SubjectToProxyTaxInd referenceDocumentId="IRS990ScheduleC">true</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>false</DonorAdvisedFundInd>
      <ConservationEasementsInd>false</ConservationEasementsInd>
      <CollectionsOfArtInd>false</CollectionsOfArtInd>
      <CreditCounselingInd>false</CreditCounselingInd>
      <TempOrPermanentEndowmentsInd referenceDocumentId="IRS990ScheduleD">true</TempOrPermanentEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="IRS990ScheduleD">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd>false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="IRS990ScheduleD">true</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="IRS990ScheduleD">true</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd>false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD">true</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd referenceDocumentId="IRS990ScheduleF">true</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd referenceDocumentId="IRS990ScheduleI">true</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="IRS990ScheduleJ">true</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd referenceDocumentId="IRS990ScheduleL">true</BusinessRlnWithFamMemInd>
      <BusinessRlnWithOfficerEntInd>false</BusinessRlnWithOfficerEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="IRS990ScheduleR">true</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>true</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd referenceDocumentId="IRS990ScheduleR">true</TransactionWithControlEntInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <IRPDocumentCnt>455</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>457</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>true</UnrelatedBusIncmOverLimitInd>
      <Form990TFiledInd>true</Form990TFiledInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>true</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>20</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>18</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>true</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>true</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>true</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>true</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>false</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>true</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>true</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>Paul Sholty</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>3124402516</PhoneNum>
        <USAddress>
          <AddressLine1Txt>211 East Chicago Avenue</AddressLine1Txt>
          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>606112637</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Chad P Gehani DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President Elect (2018-2019)</TitleTxt>
        <AverageHoursPerWeekRt>29.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>117159</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Richard A Huot</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>First VP</TitleTxt>
        <AverageHoursPerWeekRt>17.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>56428</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Craig W Herre</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Second VP</TitleTxt>
        <AverageHoursPerWeekRt>12.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr George Lewis Mitchell</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP (2016-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>17.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>36678</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Robert N Bitter</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2014-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>17.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>65655</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Rickland G Asai</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2014-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>59121</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Lindsey A Robinson</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2014-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>17.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>75126</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Judith M Fisch</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2015-2019)</TitleTxt>
        <AverageHoursPerWeekRt>11.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>73160</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Raymond A Cohlmia</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2015-2019)</TitleTxt>
        <AverageHoursPerWeekRt>16.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>71947</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Daniel J Klemmedson</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2015-2019)</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>54650</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Richard C Black</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2015-2019)</TitleTxt>
        <AverageHoursPerWeekRt>16.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>70028</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr W Roy Thompson</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2016-2020)</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>53551</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Billie Sue Kyger</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2016-2020)</TitleTxt>
        <AverageHoursPerWeekRt>14.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>53345</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Kenneth McDougall</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2016-2020)</TitleTxt>
        <AverageHoursPerWeekRt>14.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>55612</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Kirk M Norbo</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2016-2020)</TitleTxt>
        <AverageHoursPerWeekRt>14.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>55103</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Cesar R Sabates</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2016-2020)</TitleTxt>
        <AverageHoursPerWeekRt>14.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>70834</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Jay F Harrington</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2017-2021)</TitleTxt>
        <AverageHoursPerWeekRt>10.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>71685</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Linda K Himmelberger</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2017-2021)</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>69935</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Julio H Rodriguez</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2017-2021)</TitleTxt>
        <AverageHoursPerWeekRt>10.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>72022</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr George R Shepley</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2017-2021)</TitleTxt>
        <AverageHoursPerWeekRt>10.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>51510</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Susan B Doroshow</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2018-2022)</TitleTxt>
        <AverageHoursPerWeekRt>7.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Linda J Edgar</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2018-2022)</TitleTxt>
        <AverageHoursPerWeekRt>7.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr James D Stephens</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2018-2022)</TitleTxt>
        <AverageHoursPerWeekRt>1.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Paul R Leary</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Trustee (2018-2022)</TitleTxt>
        <AverageHoursPerWeekRt>7.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Kathleen T O'Loughlin DMD</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Executive Director/COO</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>597301</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>57689</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Paul S Sholty</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Chief Financial Officer</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>283221</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>64513</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Joseph P Crowley</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President (2017-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>59.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>307707</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Jeffrey M Cole DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President (2018-2019)</TitleTxt>
        <AverageHoursPerWeekRt>30.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>293176</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>8141</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Ron Lemmo</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Treasurer (Term Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>28.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>70192</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Glen D Hall</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Speaker of the House (2015-Oct 2018)</TitleTxt>
        <AverageHoursPerWeekRt>6.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>50678</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Ted Sherwin</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Treasurer</TitleTxt>
        <AverageHoursPerWeekRt>14.0</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>1512</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Anthony J Ziebert DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Education</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>319487</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>56228</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>John Craig Busey</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>General Counsel</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>303415</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>40906</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Judith E Fleeks</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP-Human Resources</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>289904</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>63881</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Toni L Mark</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Chief Technology Officer (deceased)</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>212241</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>47482</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>James S Goodman</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP, Business &amp; Conference</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>279470</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>41898</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Robert Quashie</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP, Business Operations &amp; Strategy</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>242346</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>37865</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael D Springer</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Business &amp; Publishing</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>307214</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>59814</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Marko Vujicic PHD</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP - HPRC</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>368682</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>32807</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Marcello W Araujo DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP - Science Institute</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>293533</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36217</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael A Graham</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Govt &amp; Public Affairs</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>286212</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>101729</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>David M Preble DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Sr VP - Practice Institute</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>296744</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>79876</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>William J Robinson</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President &amp; CEO ADABIG</TitleTxt>
        <AverageHoursPerWeekRltdOrgRt>40.0</AverageHoursPerWeekRltdOrgRt>
        <FormerOfcrDirectorTrusteeInd>X</FormerOfcrDirectorTrusteeInd>
        <ReportableCompFromOrgAmt>280038</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>46459</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>6316622</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>775505</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>165</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>true</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>GMMB Inc</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>3050 K Street NW</AddressLine1Txt>
            <CityNm>washington</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20007</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Advertising</ServicesDesc>
        <CompensationAmt>5781425</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>PROMETRIC INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 223608</AddressLine1Txt>
            <CityNm>PITTSBURGH</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>152512608</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Testing Services</ServicesDesc>
        <CompensationAmt>4347611</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Enterprise Settlement Services LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>2176 Wisconsin Avenue NW Suite 100</AddressLine1Txt>
            <CityNm>Washington</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20007</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Real Estate Services</ServicesDesc>
        <CompensationAmt>2691766</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CONTINUUM LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>21 DRYDOCK AVENUE SUITE 410 W</AddressLine1Txt>
            <CityNm>BOSTON</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02210</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Design Services</ServicesDesc>
        <CompensationAmt>1645969</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>NCS PEARSON</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>13036 COLLECTION CENTER DRIVE</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60693</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Testing Services</ServicesDesc>
        <CompensationAmt>1545228</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>50</CntrctRcvdGreaterThan100KCnt>
      <InfoInScheduleOPartVIIIInd>X</InfoInScheduleOPartVIIIInd>
      <RelatedOrganizationsAmt>130500</RelatedOrganizationsAmt>
      <AllOtherContributionsAmt>1103250</AllOtherContributionsAmt>
      <TotalContributionsAmt>1233750</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>Membership Dues</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>54596562</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>54596562</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Meetings &amp; Seminars</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>7830060</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>7801168</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>28892</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Publications</Desc>
        <BusinessCd>541800</BusinessCd>
        <TotalRevenueColumnAmt>6471355</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>84886</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>6386469</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Testing Service Revenue</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>26968183</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>25168696</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>1799487</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Rental Income</Desc>
        <BusinessCd>532000</BusinessCd>
        <TotalRevenueColumnAmt>182781</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>182781</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>96048941</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>2737800</TotalRevenueColumnAmt>
        <ExclusionAmt>2737800</ExclusionAmt>
      </InvestmentIncomeGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>17406116</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>2358625</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>15047491</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossRentsGrp>
        <RealAmt>6632636</RealAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>4570213</RealAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>2062423</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>2062423</TotalRevenueColumnAmt>
        <ExclusionAmt>2062423</ExclusionAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>62994479</SecuritiesAmt>
        <OtherAmt>32917</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>57468151</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>5526328</SecuritiesAmt>
        <OtherAmt>32917</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>5559245</TotalRevenueColumnAmt>
        <ExclusionAmt>5559245</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <GrossSalesOfInventoryAmt>6054047</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>1006831</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>5047216</TotalRevenueColumnAmt>
        <ExclusionAmt>5047216</ExclusionAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>Sponsorship and Display Advertising Revenue</Desc>
        <BusinessCd>541800</BusinessCd>
        <TotalRevenueColumnAmt>45955</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>45955</UnrelatedBusinessRevenueAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>Insurance Reimbursement</Desc>
        <BusinessCd>524298</BusinessCd>
        <TotalRevenueColumnAmt>688068</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>571944</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>116124</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>Program Maintenance</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1456089</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>105189</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1350900</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>1493700</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1493700</ExclusionAmt>
      </MiscellaneousRevenueGrp>
      <OtherRevenueTotalAmt>3683812</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>133779303</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>87651312</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>11479342</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>33414899</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>4817693</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>4902802</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>31965</TotalAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>42243842</TotalAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>4769109</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>3931178</TotalAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>3191387</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>459066</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>419235</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>242184</TotalAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>3160909</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>3299758</TotalAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>9278285</TotalAmt>
      </OfficeExpensesGrp>
      <RoyaltiesGrp>
        <TotalAmt>1531325</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>3800834</TotalAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>6754087</TotalAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>2705122</TotalAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>5828135</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>419880</TotalAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>Test Administration Fees</Desc>
        <TotalAmt>5637522</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Outside Services</Desc>
        <TotalAmt>12471734</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Stipends/Honoraria</Desc>
        <TotalAmt>786376</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Income &amp; Sales Tax Expense</Desc>
        <TotalAmt>1033294</TotalAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>2108876</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>123824598</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>149247</BOYAmt>
        <EOYAmt>126439</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>6226164</BOYAmt>
        <EOYAmt>6780190</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>8818174</BOYAmt>
        <EOYAmt>11179050</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>583294</BOYAmt>
        <EOYAmt>770349</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>5149520</BOYAmt>
        <EOYAmt>5477257</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>154219452</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>116492879</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>37972642</BOYAmt>
        <EOYAmt>37726573</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>139144546</BOYAmt>
        <EOYAmt>131531229</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>3134238</BOYAmt>
        <EOYAmt>4333579</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>0</BOYAmt>
      </InvestmentsProgramRelatedGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>7564946</BOYAmt>
        <EOYAmt>6236042</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>208742771</BOYAmt>
        <EOYAmt>204160708</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>61600356</BOYAmt>
        <EOYAmt>63155883</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>13453314</BOYAmt>
        <EOYAmt>13885724</EOYAmt>
      </DeferredRevenueGrp>
      <LoansFromOfficersDirectorsGrp>
        <EOYAmt>0</EOYAmt>
      </LoansFromOfficersDirectorsGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>20405140</BOYAmt>
        <EOYAmt>17351056</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>95458810</BOYAmt>
        <EOYAmt>94392663</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>113283961</BOYAmt>
        <EOYAmt>109768045</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>113283961</BOYAmt>
        <EOYAmt>109768045</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>208742771</BOYAmt>
        <EOYAmt>204160708</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>9954705</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-13134315</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>-336306</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleB documentId="IRS990ScheduleB" softwareId="18007697" softwareVersionNum="2018v3.1" />
    <IRS990ScheduleC documentId="IRS990ScheduleC" softwareId="18007697" softwareVersionNum="2018v3.1">
      <SubstantiallyAllDuesNondedInd>false</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>false</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>true</AgreeCarryoverPriorYearInd>
      <DuesAssessmentsAmt>54596562</DuesAssessmentsAmt>
      <NonDeductibleLbbyngPltclCYAmt>2490000</NonDeductibleLbbyngPltclCYAmt>
      <NonDedLbbyngPltclCyovAmt>-8611608</NonDedLbbyngPltclCyovAmt>
      <NonDeductibleLbbyngPltclTotAmt>-6121608</NonDeductibleLbbyngPltclTotAmt>
      <AggregateReportedDuesNtcAmt>3930952</AggregateReportedDuesNtcAmt>
      <CarriedOverAmt>0</CarriedOverAmt>
      <TaxableAmt>-10052560</TaxableAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule C, Part III-B Lobbying Activities</FormAndLineReferenceDesc>
        <ExplanationTxt>To stay on top of federal issues that affect dentistry and the public's oral health, the ADA maintains a staff of legislative and policy experts close to Capitol Hill. Proximity, experience and representation of the vast majority of dentists make the ADA uniquely effective in lobbying for the dental profession. Many other critical issues are decided by legislators and regulators at the state level. Although the ADA does not lobby at the state level, we do provide expertise and resources to help state dental societies create and effectively pursue their own policy agendas. At both the federal and state levels of government, we constantly monitor legislation and, when appropriate, engage in the debate, fighting for laws and regulations that matter to dentists and the patients they serve.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD" softwareId="18007697" softwareVersionNum="2018v3.1">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>11356209</BeginningYearBalanceAmt>
        <ContributionsAmt>150</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-769896</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>527736</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>129248</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>578</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>9928901</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>2929585</BeginningYearBalanceAmt>
        <ContributionsAmt>7365868</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>1848006</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>321799</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>463883</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>1568</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>11356209</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>2858319</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>193859</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>119931</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>2662</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>2929585</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>3134040</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>-150374</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>123169</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>2178</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>2858319</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>3018208</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>232785</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>115241</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>1712</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3134040</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.0</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.956</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.044</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>false</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>true</EndowmentsHeldRelatedOrgInd>
      <RelatedOrgListSchRInd>true</RelatedOrgListSchRInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>3742113</OtherCostOrOtherBasisAmt>
        <BookValueAmt>3742113</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>100141991</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>80282724</DepreciationAmt>
        <BookValueAmt>19859267</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>12097087</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>4072333</DepreciationAmt>
        <BookValueAmt>8024754</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>38238261</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>32137822</DepreciationAmt>
        <BookValueAmt>6100439</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>37726573</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>Liability For Deferred Comp</Desc>
        <Amt>5865773</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Tenant Security Deposits</Desc>
        <Amt>117126</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Post-Retirement Benefit</Desc>
        <Amt>11368157</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>Federal Income Tax Payable</Desc>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>17351056</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 4 Intended uses of endowment funds</FormAndLineReferenceDesc>
        <ExplanationTxt>The ADA's related organization, the American Dental Association Foundation, has endowment funds that support access to care and educational activities as well as charitable financial assistance. Net Assets related to the Foundation endowments are donor restricted funds, classified and reported based upon the donor-imposed restrictions or per court order.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2 FIN 48 (ASC 740) footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>Deferred taxes are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities. Deferred taxes are based upon enacted tax rates, which would apply during the period which taxes become payable or recoverable, and the adjustment of cumulative deferred taxes for any changes in the tax rate. The Association accounts for uncertain tax positions in accordance with ASC Topic 740, Income Taxes. ASC Topic 740 addresses the determination of how tax benefits claimed or expected to be claimed on a tax return should be recorded in the consolidated financial statements. Under ASC Topic 740, the Association must recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the consolidated financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. ASC Topic 740 also provides guidance on derecognition, classification, interest, and penalties on income taxes and accounting in interim periods and accounting in interim periods and requires increased disclosures. As of December 31, 2018, there was no liability related to uncertain tax positions for federal and state income taxes.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="IRS990ScheduleF" softwareId="18007697" softwareVersionNum="2018v3.1">
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Conference Travel</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>10000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>software license, maintenance subscription</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>43474</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Conference Travel</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>106678</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Program Services</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>software license, software application, membership, consulting &amp; implementation</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>155206</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>South America</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Conference Travel</TypeOfActivitiesConductedTxt>
        <RegionTotalExpendituresAmt>10567</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Fundraising</TypeOfActivitiesConductedTxt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinuationTotalOfficeCnt>0</ContinuationTotalOfficeCnt>
      <ContinuationTotalEmployeeCnt>0</ContinuationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>325925</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>325925</TotalSpentAmt>
      <TransferToForeignCorpInd>false</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>false</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="IRS990ScheduleI" softwareId="18007697" softwareVersionNum="2018v3.1">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NEVADA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>8863 W Flamingo</AddressLine1Txt>
          <CityNm>Las Vegas</CityNm>
          <StateAbbreviationCd>NV</StateAbbreviationCd>
          <ZIPCd>89147</ZIPCd>
        </USAddress>
        <RecipientEIN>880099382</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>5500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>PHILADELPHIA COUNTY DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>225 Washington Square East</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19106</ZIPCd>
        </USAddress>
        <RecipientEIN>230969355</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>5512</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MISSOURI DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3340 American Avenue</AddressLine1Txt>
          <CityNm>Jefferson City</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
          <ZIPCd>65109</ZIPCd>
        </USAddress>
        <RecipientEIN>300393232</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>6000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WASHTENAW DISTRICT DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO Box 2584</AddressLine1Txt>
          <CityNm>Ann Arbor</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>481062584</ZIPCd>
        </USAddress>
        <RecipientEIN>382472465</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>6175</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Dental Society of Western Pennsylvania</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>900 Cedar Avenue</AddressLine1Txt>
          <CityNm>Pittsburgh</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>15212</ZIPCd>
        </USAddress>
        <RecipientEIN>250700260</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>6560</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Central Christian Church of RIchardson</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1651 E Campbell Rd</AddressLine1Txt>
          <CityNm>Richardson</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75082</ZIPCd>
        </USAddress>
        <RecipientEIN>237105978</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MISSISSIPPI DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>439 Katherine Drive</AddressLine1Txt>
          <CityNm>Flowood</CityNm>
          <StateAbbreviationCd>MS</StateAbbreviationCd>
          <ZIPCd>39232</ZIPCd>
        </USAddress>
        <RecipientEIN>237104321</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>OKLAHOMA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>317 NE 13th Street</AddressLine1Txt>
          <CityNm>Oklahoma</CityNm>
          <StateAbbreviationCd>OK</StateAbbreviationCd>
          <ZIPCd>73104</ZIPCd>
        </USAddress>
        <RecipientEIN>730384196</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NATIONAL NETWORK FOR ORAL HEALTH ACCESS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>181 E 56TH AVENUE</AddressLine1Txt>
          <CityNm>DENVER</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80216</ZIPCd>
        </USAddress>
        <RecipientEIN>841186592</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>10250</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SOUTHERN NEVADA DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>8863 W Flamingo</AddressLine1Txt>
          <CityNm>Las Vegas</CityNm>
          <StateAbbreviationCd>NV</StateAbbreviationCd>
          <ZIPCd>89147</ZIPCd>
        </USAddress>
        <RecipientEIN>880244494</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>10259</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AWARDING YOU</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>28W600 Roosevelt Rd</AddressLine1Txt>
          <CityNm>Winfield</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60190</ZIPCd>
        </USAddress>
        <RecipientEIN>364176809</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>10774</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>OHIO DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1370 Dublin Road</AddressLine1Txt>
          <CityNm>Columbus</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>43215</ZIPCd>
        </USAddress>
        <RecipientEIN>314361266</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>13000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Joseph Richardson</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>7901 Lone Star Drive</AddressLine1Txt>
          <CityNm>Houston</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
          <ZIPCd>65483</ZIPCd>
        </USAddress>
        <RecipientEIN>499508647</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>15000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MONTANA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 1154</AddressLine1Txt>
          <CityNm>HELENA</CityNm>
          <StateAbbreviationCd>MT</StateAbbreviationCd>
          <ZIPCd>59624</ZIPCd>
        </USAddress>
        <RecipientEIN>810169605</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>16500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>JIM COLEMAN LTD</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1500 S Hicks Road</AddressLine1Txt>
          <CityNm>Rolling Meadows</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60008</ZIPCd>
        </USAddress>
        <RecipientEIN>363737877</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>16745</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ALASKA DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1407 W 31ST AVE 304</AddressLine1Txt>
          <CityNm>ANCHORAGE</CityNm>
          <StateAbbreviationCd>AK</StateAbbreviationCd>
          <ZIPCd>99503</ZIPCd>
        </USAddress>
        <RecipientEIN>920064057</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>17500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NEW YORK STATE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>20 Corporate Woods Blvd</AddressLine1Txt>
          <CityNm>Albany</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>12211</ZIPCd>
        </USAddress>
        <RecipientEIN>141434154</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>19457</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SAN FERNANDO VALLEY DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>9205 Alabama Avenue</AddressLine1Txt>
          <CityNm>Chatsworth</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>91311</ZIPCd>
        </USAddress>
        <RecipientEIN>952004498</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>19500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>GOLDIE'S PLACE</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5705 N Lincoln Ave</AddressLine1Txt>
          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60659</ZIPCd>
        </USAddress>
        <RecipientEIN>364080055</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>20053</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>COLEGIO DE CIRUJANOS DENTISTAS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>200 Calle Manual Domench</AddressLine1Txt>
          <CityNm>San Juan</CityNm>
          <StateAbbreviationCd>PR</StateAbbreviationCd>
          <ZIPCd>009183537</ZIPCd>
        </USAddress>
        <RecipientEIN>660240779</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>30000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>FLORIDA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>545 John Xnox Road</AddressLine1Txt>
          <CityNm>Tallahasse</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>323034182</ZIPCd>
        </USAddress>
        <RecipientEIN>590615479</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>39500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WISCONSIN DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>6737 W Washington Street</AddressLine1Txt>
          <CityNm>West Allis</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>53214</ZIPCd>
        </USAddress>
        <RecipientEIN>390716117</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>48000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MINNESOTA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1335 INDUSTRIAL BLVD</AddressLine1Txt>
          <CityNm>MINNEAPOLIS</CityNm>
          <StateAbbreviationCd>MN</StateAbbreviationCd>
          <ZIPCd>55413</ZIPCd>
        </USAddress>
        <RecipientEIN>410418600</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>49338</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>RHODE ISLAND DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>825 CENTERVILLE RD</AddressLine1Txt>
          <CityNm>WARWICK</CityNm>
          <StateAbbreviationCd>RI</StateAbbreviationCd>
          <ZIPCd>02886</ZIPCd>
        </USAddress>
        <RecipientEIN>050374154</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>53200</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>DELAWARE STATE DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>200 CONTINENTAL DRIVE</AddressLine1Txt>
          <CityNm>NEWARK</CityNm>
          <StateAbbreviationCd>DE</StateAbbreviationCd>
          <ZIPCd>19713</ZIPCd>
        </USAddress>
        <RecipientEIN>516015486</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>55000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>KENTUCKY DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1920 Nelson Miller Parkway</AddressLine1Txt>
          <CityNm>Louisville</CityNm>
          <StateAbbreviationCd>KY</StateAbbreviationCd>
          <ZIPCd>402232164</ZIPCd>
        </USAddress>
        <RecipientEIN>610426190</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>55832</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>VERMONT STATE DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1 KENNEDY DRIVE</AddressLine1Txt>
          <CityNm>SOUTH BURLINGTON</CityNm>
          <StateAbbreviationCd>VT</StateAbbreviationCd>
          <ZIPCd>05403</ZIPCd>
        </USAddress>
        <RecipientEIN>222514423</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>64500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>VIRGINIA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3460 Maryland Court</AddressLine1Txt>
          <CityNm>Richmond</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>23233</ZIPCd>
        </USAddress>
        <RecipientEIN>540697647</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>70000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>HAWAII DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1345 S BERETANIA STREET</AddressLine1Txt>
          <CityNm>HONOLULU</CityNm>
          <StateAbbreviationCd>HI</StateAbbreviationCd>
          <ZIPCd>96814</ZIPCd>
        </USAddress>
        <RecipientEIN>996005352</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>73000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>IDAHO STATE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1220 WEST HAYS ST</AddressLine1Txt>
          <CityNm>BOISE</CityNm>
          <StateAbbreviationCd>ID</StateAbbreviationCd>
          <ZIPCd>83702</ZIPCd>
        </USAddress>
        <RecipientEIN>826007766</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>73500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NEW HAMPSHIRE DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>23 S STATE STREET</AddressLine1Txt>
          <CityNm>CONCORD</CityNm>
          <StateAbbreviationCd>NH</StateAbbreviationCd>
          <ZIPCd>03301</ZIPCd>
        </USAddress>
        <RecipientEIN>020230365</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>74500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>PA CONSULTING GROUP</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>55 Cambridge Parkway</AddressLine1Txt>
          <CityNm>Cambridge</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02141</ZIPCd>
        </USAddress>
        <RecipientEIN>222287449</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>80000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NEW JERSEY DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1 Dental Plaza</AddressLine1Txt>
          <CityNm>North Brunswick</CityNm>
          <StateAbbreviationCd>NJ</StateAbbreviationCd>
          <ZIPCd>08902</ZIPCd>
        </USAddress>
        <RecipientEIN>210606618</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>87500</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NORTH DAKOTA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 1332</AddressLine1Txt>
          <CityNm>BISMARCK</CityNm>
          <StateAbbreviationCd>ND</StateAbbreviationCd>
          <ZIPCd>58502</ZIPCd>
        </USAddress>
        <RecipientEIN>456014875</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>98531</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>CONNECTICUT STATE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>835 WEST QUEEN STREET</AddressLine1Txt>
          <CityNm>SOUTHINGTON</CityNm>
          <StateAbbreviationCd>CT</StateAbbreviationCd>
          <ZIPCd>06489</ZIPCd>
        </USAddress>
        <RecipientEIN>060605831</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>102000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NEW MEXICO DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>9201 MONTGOMERY BLVD NE</AddressLine1Txt>
          <CityNm>ALBUQUERQUE</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
          <ZIPCd>87111</ZIPCd>
        </USAddress>
        <RecipientEIN>850122362</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>103338</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MASSACHUSETTS DENTAL SOCIETY</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2 WILLOW STREET</AddressLine1Txt>
          <CityNm>SOUTHBOROUGH</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>017451027</ZIPCd>
        </USAddress>
        <RecipientEIN>041590155</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>108350</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MARYLAND STATE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>8901 HERRMANN DR</AddressLine1Txt>
          <CityNm>COLUMBIA</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>21045</ZIPCd>
        </USAddress>
        <RecipientEIN>526041784</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>110000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MICHIGAN DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3657 OKEMOS ROAD SUITE 100</AddressLine1Txt>
          <CityNm>OKEMOS</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>48864</ZIPCd>
        </USAddress>
        <RecipientEIN>381300483</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>123426</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>OREGON DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>8699 SW Sun Place</AddressLine1Txt>
          <CityNm>Wilsonville</CityNm>
          <StateAbbreviationCd>OR</StateAbbreviationCd>
          <ZIPCd>97070</ZIPCd>
        </USAddress>
        <RecipientEIN>930243383</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>126548</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ARIZONA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3193 N DRINKWATER BLVD</AddressLine1Txt>
          <CityNm>SCOTTSDALE</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85251</ZIPCd>
        </USAddress>
        <RecipientEIN>860103604</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>130496</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>GEORGIA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>700 PEACHTREE DUNWOODY ROAD NE</AddressLine1Txt>
          <CityNm>ATLANTA</CityNm>
          <StateAbbreviationCd>GA</StateAbbreviationCd>
          <ZIPCd>30328</ZIPCd>
        </USAddress>
        <RecipientEIN>580626520</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>138327</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>CALIFORNIA DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1201 K STREET</AddressLine1Txt>
          <CityNm>SACRAMENTO</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>95814</ZIPCd>
        </USAddress>
        <RecipientEIN>952822367</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>144993</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MAINE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 215</AddressLine1Txt>
          <CityNm>MANCHESTER</CityNm>
          <StateAbbreviationCd>ME</StateAbbreviationCd>
          <ZIPCd>04351</ZIPCd>
        </USAddress>
        <RecipientEIN>016019308</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>157528</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>KANSAS DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>5200 SW HUNTOON STREET</AddressLine1Txt>
          <CityNm>TOPEKA</CityNm>
          <StateAbbreviationCd>KS</StateAbbreviationCd>
          <ZIPCd>66604</ZIPCd>
        </USAddress>
        <RecipientEIN>480803779</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>168000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WASHINGTON STATE DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>126 NW Canal Street</AddressLine1Txt>
          <CityNm>Seattle</CityNm>
          <StateAbbreviationCd>WA</StateAbbreviationCd>
          <ZIPCd>98107</ZIPCd>
        </USAddress>
        <RecipientEIN>910750294</RecipientEIN>
        <IRCSectionDesc>501(c)(6)</IRCSectionDesc>
        <CashGrantAmt>231000</CashGrantAmt>
        <PurposeOfGrantTxt>public support</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ADA FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>211 E Chicago Ave</AddressLine1Txt>
          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
        </USAddress>
        <RecipientEIN>366132046</RecipientEIN>
        <IRCSectionDesc>501(c)3</IRCSectionDesc>
        <CashGrantAmt>2500000</CashGrantAmt>
        <PurposeOfGrantTxt>Public Support</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>8</Total501c3OrgCnt>
      <TotalOtherOrgCnt>39</TotalOtherOrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule I, Part I, Line 2 Procedures for monitoring use of grant funds.</FormAndLineReferenceDesc>
        <ExplanationTxt>American Dental Association grants are usually given in accordance with established agreements regarding specific purposes. Detailed reporting of monies spent is obtained for the grant to the ADA Foundation but not typically required for other grants. The association awards grants based on a case by case review. Criteria and templates have been established for the grants to state dental associations.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ" softwareId="18007697" softwareVersionNum="2018v3.1">
      <TravelForCompanionsInd>X</TravelForCompanionsInd>
      <IdemnificationGrossUpPmtsInd>X</IdemnificationGrossUpPmtsInd>
      <ClubDuesOrFeesInd>X</ClubDuesOrFeesInd>
      <WrittenPolicyRefTAndEExpnssInd>true</WrittenPolicyRefTAndEExpnssInd>
      <SubstantiationRequiredInd>true</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <IndependentConsultantInd>X</IndependentConsultantInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>true</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Kathleen T O'Loughlin DMD</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Executive Director/COO</TitleTxt>
        <BaseCompensationFilingOrgAmt>563245</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>22340</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>11716</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>48873</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8816</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>654990</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Paul S Sholty</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Chief Financial Officer</TitleTxt>
        <BaseCompensationFilingOrgAmt>278099</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5122</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>53938</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>10575</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>347734</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Joseph P Crowley</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President (2017-Oct 2018)</TitleTxt>
        <BaseCompensationFilingOrgAmt>275250</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>32457</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>307707</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dr Jeffrey M Cole DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President (2018-2019)</TitleTxt>
        <BaseCompensationFilingOrgAmt>264323</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>28853</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8141</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>301317</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Anthony J Ziebert DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Education</TitleTxt>
        <BaseCompensationFilingOrgAmt>316447</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>3040</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>52221</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>4007</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>375715</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>John Craig Busey</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>General Counsel</TitleTxt>
        <BaseCompensationFilingOrgAmt>294167</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>9248</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>36899</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>4007</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>344321</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Judith E Fleeks</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP-Human Resources</TitleTxt>
        <BaseCompensationFilingOrgAmt>279908</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>6750</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>3246</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>55065</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8816</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>353785</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Toni L Mark</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Chief Technology Officer (deceased)</TitleTxt>
        <BaseCompensationFilingOrgAmt>209646</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>2595</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>37348</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>10134</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>259723</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>James S Goodman</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP, Business &amp; Conference</TitleTxt>
        <BaseCompensationFilingOrgAmt>277328</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>300</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1842</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>32553</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>9345</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>321368</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Robert Quashie</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP, Business Operations &amp; Strategy</TitleTxt>
        <BaseCompensationFilingOrgAmt>234624</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5800</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1922</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>30794</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7071</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>280211</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael D Springer</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Business &amp; Publishing</TitleTxt>
        <BaseCompensationFilingOrgAmt>297346</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>300</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>9568</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>52537</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7277</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>367028</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Marko Vujicic PHD</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP - HPRC</TitleTxt>
        <BaseCompensationFilingOrgAmt>347383</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>20300</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>999</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>32131</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>676</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>401489</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Marcello W Araujo DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>VP - Science Institute</TitleTxt>
        <BaseCompensationFilingOrgAmt>285854</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5800</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1879</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>28940</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7277</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>329750</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael A Graham</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>SVP - Govt &amp; Public Affairs</TitleTxt>
        <BaseCompensationFilingOrgAmt>280717</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>300</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5195</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>88968</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12761</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>387941</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>David M Preble DDS</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Sr VP - Practice Institute</TitleTxt>
        <BaseCompensationFilingOrgAmt>285961</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5600</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>5183</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>72039</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7837</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>376620</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <BusinessName>
          <BusinessNameLine1Txt>William J Robinson</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>President &amp; CEO ADABIG</TitleTxt>
        <BaseCompensationFilingOrgAmt>275289</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>300</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>4449</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>38622</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>7837</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>326497</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a Travel for companions</FormAndLineReferenceDesc>
        <ExplanationTxt>Companion travel is considered a taxable benefit and subject to tax. The tax associated with this benefit is also included in the individuals' Form W-2.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a Tax indemnification and gross-up payments</FormAndLineReferenceDesc>
        <ExplanationTxt>Companion travel is considered a taxable benefit and subject to tax. The tax associated with this benefit is also included in the individuals' Form W-2. The individuals receive gross up payments to cover their added tax burden for companion travel.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 1a Health or social club dues or initiation fees</FormAndLineReferenceDesc>
        <ExplanationTxt>As part of the Executive Director's employment contract, the Executive Director was reimbursed for membership in an athletic club. The tax associated with this benefit is also included in the individuals' Form W-2.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4b Supplemental nonqualified retirement plan</FormAndLineReferenceDesc>
        <ExplanationTxt>Deferred compensation in column C includes, where applicable, the 2018 increase in actuarial value of the defined benefit plan, employer contributions to the 401K defined contribution plan, as well as amounts awarded but not paid under the Executive Parity Plan. The Executive Parity Plan is a deferred compensation arrangement which allows the Compensation Committee of the Board of Trustees to set aside specified compensation for those who suffered restrictions in their benefits beginning in 1994 as a result of the omnibus budget reconciliation act. Nontaxable benefits in column D includes employer-paid health benefit plan premiums and the value of employer self-insured dental benefits.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="IRS990ScheduleL" softwareId="18007697" softwareVersionNum="2018v3.1">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>Lauren Kyger</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>Family Member of Trustee of the Organization</RelationshipDescriptionTxt>
        <TransactionAmt>31965</TransactionAmt>
        <TransactionDesc>Employee of the Organization. Office Manager of the Washington DC building.</TransactionDesc>
        <SharingOfRevenuesInd>false</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="18007697" softwareVersionNum="2018v3.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 15 Section 4960 Tax Explanation</FormAndLineReferenceDesc>
        <ExplanationTxt>Section 4960, Excise Tax on Excess Compensation, was enacted effective January 1, 2018 under the Tax Cuts and Jobs Act. As such, excess remuneration over $1M is subject to the Section 4960 Tax. The ADA paid over $1M in remuneration to former employee Dr. James W Graham in 2018, and is thus subject to the excise tax. Dr. Graham does not appear on the ADA Form 990 Part VII or Schedule J as he does not meet the requirements to be reportable as a former employee. To be considered reportable as a former employee on the Form 990, an individual must have been reportable on any of the prior five year's tax returns as a current officer, director, trustee, key employee, or highest compensated individual, which Dr. Graham was not. Dr. Graham's 2018 remuneration represents the payout of compensation that was originally deferred pursuant to pre-1986 income tax laws. As such it is treated as W-2 income for Dr. Graham and under Section 4960, ADA is subject to the excise tax on excess compensation over $1M.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b PROCESS TO ESTABLISH COMPENSATION OF OTHER OFFICERS AND KEY EMPLOYEES</FormAndLineReferenceDesc>
        <ExplanationTxt>The Executive Director determines and reviews the compensation of Key Employees on an annual basis. Employees' salaries are made available to the Board of Trustees for examination upon request and any deliberations or decisions based on the review is documented in the board minutes. The Human Resources Department reviews comparability data on annual salary increases every 3 to 5 years and monitors a comprehensive compensation program.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 4 Significant changes to organizational documents</FormAndLineReferenceDesc>
        <ExplanationTxt>The ADA Bylaws were reduced in size; however, the removal of the specified provisions from the bylaws did not remove those items from the ADA's governance structure. These items were simply moved out of the bylaws and into separate governance "manuals." These governance manuals were then referenced by the bylaws as the procedures to be followed by the ADA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 6 Classes of members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>All ADA members have the right to vote and elect representatives to the ADA House of Delegates ("HOD") through their local and/or state dental association in a national tripartite governance structure. The United States and its territories are divided into 17 districts. Each district elects a trustee to the board who serves a 5 year term. The ADA HOD is the primary legislative body of the ADA which meets annually and elects the officers of the Board of Trustees.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7a Members or stockholders electing members of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>The nature of the voting rights of members is described above fro Part VI, LIne 6. Elections are held on an annual basis for each level of governance.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 7b Decisions requiring approval by members or stockholders</FormAndLineReferenceDesc>
        <ExplanationTxt>The "House of Delegates" is separate from the governing Board of Directors and must approve both the budget and any changes to the organization's BYlaws.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 8b Documentation of meetings held by committees of governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>There is no committee with broad authority to act on behalf of the governing body.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>The Form 990 was reviewed by management prior to filing, Financial Information was compared to the organization's books and records. Responses to questions and additional information was reviewed for appropriateness. Additionally, the Form 990 was provided to the Audit Committee of the Board of Trustees as well as all members of the Board of Trustees prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>There is an annual review of the conflict of interest policy. Board members and employees at the director level and above are required to sign the conflict of interest disclosure from each year. In-house legal counsel collects and reviews responses and determines necessary action if any. Individuals who have a disclosed conflict recuse themselves from discussion, and do not vote if there is a direct conflict.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>The Compensation Committee of the Board of Trustees determines and reviews the compensation of the Executive Director, Officers and Members of the Board of Trustees on an annual basis. All employees' salaries are made available to the Board of Trustees upon request for examination and any deliberations or decisions based on the review is documented in the board minutes. The Human Resources Department obtains comparability data on annual salary increases every 3 to 5 years and monitors a comprehensive compensation program.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>The American Dental Association makes its governing documents, conflict of interest policy or financial statements available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VIII, Line 5 Royalties</FormAndLineReferenceDesc>
        <ExplanationTxt>ADA entered into a journal publishing agreement to publish, promote, and distribute The Journal of the American Dental Association (JADA). The amount that the Publisher pays to ADA is primarily related to advertising revenue from the publication.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VIII, Line 11d Other Miscellaneous Revenue</FormAndLineReferenceDesc>
        <ExplanationTxt>Other Revenue - Total Revenue: 1493700, Related or Exempt Function Revenue: , Unrelated Business Revenue: , Revenue Excluded from Tax Under Sections 512, 513, or 514: 1493700;</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>Investment in Sub - -784632; Pension Related Changes other than Net Periodic Costs - 448326;</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR" softwareId="18007697" softwareVersionNum="2018v3.1">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ADA Foundation</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>211 East Chicago Avenue</AddressLine1Txt>
          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>606112637</ZIPCd>
        </USAddress>
        <EIN>366132046</EIN>
        <PrimaryActivitiesTxt>Grant Making</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>9</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ADPAC Education Fund</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1111 14th Street NW</AddressLine1Txt>
          <AddressLine2Txt>Suite 1100</AddressLine2Txt>
          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
        </USAddress>
        <EIN>900038675</EIN>
        <PrimaryActivitiesTxt>Seg. Fund</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>527</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>ADA Business Enterprises Inc</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>211 East Chicago Avenue</AddressLine1Txt>
          <CityNm>Chicago</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>606112637</ZIPCd>
        </USAddress>
        <EIN>363679743</EIN>
        <PrimaryActivitiesTxt>Financial Services</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>American Dental Association</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C Corporation</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>185740</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>2799555</ShareOfEOYAssetsAmt>
        <OwnershipPct>1</OwnershipPct>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>American Dental Association Political Action Committee</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1111 14th Street NW</AddressLine1Txt>
          <AddressLine2Txt>Suite 1100</AddressLine2Txt>
          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
        </USAddress>
        <EIN>520913198</EIN>
        <PrimaryActivitiesTxt>Encourage Participation in Government Affairs</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C Corporation</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>-80874</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>867900</ShareOfEOYAssetsAmt>
        <OwnershipPct>1</OwnershipPct>
        <ControlledOrganizationInd>false</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>ADA BUSINESS INNOVATION GROUP</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>541 N FAIRBANKS CT FL 22ND</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
        </USAddress>
        <EIN>832668449</EIN>
        <PrimaryActivitiesTxt>Dental Practice Matching Service</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>IL</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>AMERICAN DENTAL ASSOCIATION</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C Corporation</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>-970372</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>1033922</ShareOfEOYAssetsAmt>
        <OwnershipPct>1.00</OwnershipPct>
        <ControlledOrganizationInd>true</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>true</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>true</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>true</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>true</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>true</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>true</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>true</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>true</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>true</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>true</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ADA Business Enterprises Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>A</TransactionTypeTxt>
        <InvolvedAmt>130500</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Lease terms</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ADA Business Enterprises Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>P</TransactionTypeTxt>
        <InvolvedAmt>149418</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Indirect Cost calculation</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ADA BUSINESS INNOVATION GROUP</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>2003296</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash Value</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ADA Foundation</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>2500000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash Value</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ADA Business Enterprises Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>C</TransactionTypeTxt>
        <InvolvedAmt>52500</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash Value</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>