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      <Form990ScheduleJPartIII>
        <Identifier>Compensation Information</Identifier>
        <ReturnReference>Schedule J, Part I, Line 1b</ReturnReference>
        <Explanation>Officers and members of the board of trustees receive payments meant to compensate them for the estimated amount of tax they incurred for spouse travel that was included in their taxable income reported on Form 1099 or W-2. Similar payments are not made to any others. In addition, as part of the Executive Director's employment contract, the Executive Director was reimbursed for membership in an athletic club.</Explanation>
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      <Form990ScheduleJPartIII>
        <Identifier>DEFERRED COMPENSATION</Identifier>
        <ReturnReference>Schedule J, Part II, Column (c) and (d)</ReturnReference>
        <Explanation>Deferred compensation in Column C includes, where applicable, the 2011 increase in actuarial value of the defined benefit plan, employer contributions to the 401(k) 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 cash amounts annually for certain executives. This arrangement is meant as compensation for those who suffered restrictions in their benefits beginning in 1994 as a result of the omnibus budget reconciliation act.</Explanation>
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      <Form990ScheduleJPartIII>
        <Identifier>Nontaxable benefits in column D includes employer-paid health benefit plan</Identifier>
        <ReturnReference>premiums and the value of employer self-insured dental benefits.</ReturnReference>
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      <Form990ScheduleJPartIII>
        <Identifier>SCHEDULE J, PART I, LINE 4b</Identifier>
        <ReturnReference>Nonqualified Plans</ReturnReference>
        <Explanation>The following individuals participated in a nonqualified plan during 2011 and received contributions in the following amounts: Kathleen O'Loughlin $76,021 (Accrual) Laura Neumann $57,500 (Accrual) $57,500 (Payout) Raymond Gist $82,624 (Accrual) $144,844 (Payout) Edward Leone $17,264 (Accrual) Wendy Jo Toyama $ 28 (Accrual) Paul Sholty $ 1,251 (Accrual) Daniel Meyer $12,523 (Accrual) $12,523 (Payout) Joseph McManus $ 3,227 (Accrual) William Calnon $48,044 (Accrual) J. Craign Busey $ 1,917 (Accrual) Albert Guay $23,190 (Accrual) $23,190 (Payout) Clay Mickel $5,428 (Accrual) $5,428 (Payout)</Explanation>
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    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 1b</Identifier>
        <ReturnReference>Independent voting members</ReturnReference>
        <Explanation>Members of the ADA board of trustees are not considered independent because they receive reimbursement of stated amounts on an annual basis for such general expenses as postage, telephone, per diem expenses, and secretarial assistance. Substantiation of such expenses is not required for reimbursement. These amounts are reported as taxable income to the recipients. In addition to the number of voting members reported on Line 1a, the ADA's president votes on an issue only if the board members' vote results in a tie.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 6</Identifier>
        <ReturnReference>Members or stockholders</ReturnReference>
        <Explanation>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 ADA HOD is the primary legislative body of the ADA which meets annually and elects the members of the board of trustees.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 7a</Identifier>
        <ReturnReference>Voting rights</ReturnReference>
        <Explanation>The nature of the voting rights of members is described above for Part VI, Line 6. Elections are held on an annual basis for each level of governance.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 7b</Identifier>
        <ReturnReference>GOVERNANCE DECISION APPROVAL</ReturnReference>
        <Explanation>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.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 11b</Identifier>
        <ReturnReference>Review of Form 990</ReturnReference>
        <Explanation>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.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 12c</Identifier>
        <ReturnReference>Conflict of Interest Policy</ReturnReference>
        <Explanation>There is an annual review of the conflict of interest policy. Board members and employees at the director level and above are requried to sign the conflict of interest disclosure form each year. In-house legal counsel collects and reviews responses and determine necessary action if any. Individuals who have a disclosed conflict recuse themselves from discussion, and do not vote if there is a direct conflict.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 15a &amp; 15b</Identifier>
        <ReturnReference>Process for determining compensation</ReturnReference>
        <Explanation>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. The executive director determines and reviews the compensation of key employees. Employee's salaries are made available to the board of trustees for examination. The human resources department reviews comparability data on annual salary increases.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Line 19</Identifier>
        <ReturnReference>Organization Documents</ReturnReference>
        <Explanation>The American Dental Association does not make its governing documents, conflict of interest policy or financial statements available to the public.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part XI, Line 5</Identifier>
        <Explanation>UNREALIZED LOSS ON INVESTMENTS (5,405,969) RELATED CHANGES OTHER THAN NET PERIODIC PENSION COSTS 7,855,195 PRIOR PERIOD ADJUSTMENT 1 DEFERRED COMPENSATION APPRECIATION (203,770) EQUITY SUBSIDIARY EARNINGS ADAHC 534,711 TOTAL 2,780,168</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. STEVEN GOUNARDES TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. DONALD L. SEAGO TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. ROGER L. KIESLING TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. R. WAYNE THOMPSON TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. GARY S. YONEMOTO TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:DR. CHARLES H. NORMAN, III TITLE:TRUSTEE HOURS:1</Explanation>
      </GeneralExplanation>
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          <BusinessNameLine1>ADA Foundation</BusinessNameLine1>
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          <AddressLine1>211 E Chicago Ave</AddressLine1>
          <City>Chicago</City>
          <State>IL</State>
          <ZIPCode>60611</ZIPCode>
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        <EIN>366132046</EIN>
        <PrimaryActivities>Grant Making</PrimaryActivities>
        <LegalDomicileState>IL</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>509(a)(2)</PublicCharityStatus>
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          <BusinessNameLine1>ADPAC EDUCATION FUND</BusinessNameLine1>
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          <AddressLine1>1111 14TH STREET NW</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20005</ZIPCode>
        </AddressUS>
        <EIN>900038675</EIN>
        <PrimaryActivities>seg. fund</PrimaryActivities>
        <LegalDomicileState>DC</LegalDomicileState>
        <ExemptCodeSection>527</ExemptCodeSection>
        <PublicCharityStatus>N/A</PublicCharityStatus>
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          <BusinessNameLine1>ADA Business Enterprises Inc</BusinessNameLine1>
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          <City>Chicago</City>
          <State>IL</State>
          <ZIPCode>606112637</ZIPCode>
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        <PrimaryActivity>Fin. Services</PrimaryActivity>
        <LegalDomicileState>IL</LegalDomicileState>
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        <TypeOfEntity>C Corp</TypeOfEntity>
        <ShareOfTotalIncome>534711</ShareOfTotalIncome>
        <ShareOfEOYAssets>3296070</ShareOfEOYAssets>
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      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>false</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>true</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>false</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>true</SharingOfFacilities>
      <SharingOfPaidEmployees>true</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>true</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>true</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>true</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>ADA BUSINESS ENTERPRISES INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>A</TransactionType>
        <AmountInvolved>87500</AmountInvolved>
        <MethodOfAmtDetermination>BOOK</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>ADA BUSINESS ENTERPRISES INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>169797</AmountInvolved>
        <MethodOfAmtDetermination>BOOK</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>ADA BUSINESS ENTERPRISES INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>O</TransactionType>
        <AmountInvolved>10000</AmountInvolved>
        <MethodOfAmtDetermination>BOOK</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <Form990ScheduleRPartVII>
        <Identifier>SCHEDULE R, PART II</Identifier>
        <Explanation>The American Dental Association contributes accounting, financial, and administrative services to the ADA Foundation as may be required. In 2011, the ADA Foundation paid $300,143 to the ADA for such services. The value of these services was estimated at $881,058.</Explanation>
      </Form990ScheduleRPartVII>
    </IRS990ScheduleR>
  </ReturnData>
</Return>