Second Amendment to Registration Rights Agreement among InterDent, Inc., Requisite Holders, and Additional Holders

SECOND AMENDMENT TO REGISTRATION RIGHTS AGREEMENT

    THIS SECOND AMENDMENT TO REGISTRATION RIGHTS AGREEMENT (the "Amendment"), dated as of April 13, 2001, is made and entered into among INTERDENT, INC. ("the Company"), the Requisite Holders and Union Bank of California, N.A., The Chase Manhattan Bank, Bank of America, N.A., Citizens Bank of Massachusetts, First National Bank, Fleet Capital Corporation, Sovereign Bank and U.S. Bank National Association (collectively, the "Additional Holders").

    WHEREAS, the Company has entered into a Registration Rights Agreement dated as of March 11, 1999 (the "Registration Rights Agreement"), pursuant to which the Holders received registration rights with respect to certain securities of the Company owned by the Holders; and

    WHEREAS, the Additional Holders desire to become parties to the Registration Rights Agreement, as amended hereby.

    NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

    1.  Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to such terms in the Registration Rights Agreement.

    2.  Pursuant to Section 19 thereof, the Registration Rights Agreement is hereby amended as follows:

    (a) For all purposes of the Registration Rights Agreement, each Additional Holder shall be considered a Holder and entitled to all rights and subject to all obligations under the Registration Rights Agreement, as amended pursuant to this Amendment.

    (b) Schedule I to the Registration Rights Agreement is hereby amended to add at the end thereof, the following text:

Union Bank of California, N.A.
400 California St., 8^th Floor
San Francisco, CA 94104
Attention: Nancy Perkins, Vice President
Telephone: (415)  ###-###-####
Telecopier: (415)  ###-###-####

The Chase Manhattan Bank
1166 Sixth Avenue, 16^th Floor
New York, NY 10036
Attention: Eric Groberg, Vice President
Telephone: (212)  ###-###-####
Telecopier: (212)  ###-###-####

Bank of America, N.A.
South Coast Financial Center
675 Anton Blvd., 2^nd Floor
Costa Mesa, CA ###-###-####
Attention: Ronald Parisi, Senior Vice President
Telephone: (714)  ###-###-####
Telecopier: (714)  ###-###-####

Citizens Financial Group, Inc.
53 State Street, 8^th Floor
Boston, MA 02109

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Attention: Larry Jacobs, Vice President
Telephone: (617)  ###-###-####
Telecopier: (617)  ###-###-####

First National Bank
401 West "A" Street
San Diego, CA 92101
Attention: Daniel T. Grenci, Senior Vice President
Telephone: (619)  ###-###-####
Telecopier: (619)  ###-###-####

Fleet Capital Corporation
15260 Ventura Blvd., Suite 400
Sherman Oaks, CA ###-###-####
Attention: Leslie Reuter, Senior Vice President
Telephone: (818)  ###-###-####
Telecopier: (818)  ###-###-####

Sovereign Bank
100 Pearl Street, 5^th Floor
Hartford, CT 06103
Attention: Roland Lamothe
Telephone: (860)  ###-###-####
Telecopier: (860)  ###-###-####

U.S. Bank National Association
601 Second Avenue South
MPFP2516
Minneapolis, MN ###-###-####
Attention: Daniel Falstad, VP
Telephone: (612)  ###-###-####
Telecopier: (612)  ###-###-####

    3.  All other provisions of the Registration Rights Agreement shall remain in full force and effect.

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    IN WITNESS WHEREOF, the parties have executed and delivered this Second Amendment to Registration Rights Agreement as of the day and year first above written.

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