LETTER OF TRANSMITTAL

INTERDENT SERVICE CORPORATION

Offer to Exchange up to
$80,000,000 10³/4% Senior Secured Notes due 2011 for
$80,000,000 10³/4% Senior Secured Notes due 2011
that have been registered under the Securities Act of 1933

Pursuant to the Prospectus dated        , 2005

        THE EXCHANGE OFFER WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON        , 2005, UNLESS EXTENDED (SUCH TIME AND DATE, AS THE SAME MAY BE EXTENDED FROM TIME TO TIME, THE "EXPIRATION DATE"). TENDERS MAY BE WITHDRAWN AT ANY TIME PRIOR TO THE EXPIRATION DATE.

The Exchange Agent is:

WELLS FARGO BANK, NATIONAL ASSOCIATION

        DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE OR TRANSMISSION TO A FACSIMILE NUMBER OTHER THAN THE ONE LISTED ABOVE WILL NOT CONSTITUTE VALID DELIVERY TO THE EXCHANGE AGENT.

        THE INSTRUCTIONS SET FORTH IN THIS LETTER OF TRANSMITTAL SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.

        By execution hereof, the undersigned acknowledges receipt of the prospectus dated        , 2005 (the "Prospectus"), of InterDent Service Corporation, a Washington corporation (the "Company"), and this letter of transmittal and the instructions hereto (the "Letter of Transmittal"), which together constitute the Company's offer to exchange (the "Exchange Offer") an aggregate principal amount of up to $80 million 10.75% senior secured notes due 2011 that have been registered under the Securities Act of 1933, as amended (the "Exchange Notes"), for any and all outstanding 10.75% senior subordinated notes due 2011 that we issued on December 15, 2004 (the "Old Notes"). Recipients of the Prospectus should read the requirements described in the Prospectus with respect to eligibility to participate in the Exchange Offer. Capitalized terms used but not defined herein have the meaning given to them in the Prospectus.

        PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL CAREFULLY BEFORE CHECKING ANY BOX BELOW.

        This Letter of Transmittal is to be used by a holder of Old Notes:

if certificates representing tendered Old Notes are to be forwarded herewith;



if a tender of certificates for Old Notes is to be made by book-entry transfer to the account maintained by the Exchange Agent at the Depository Trust Company ("DTC") pursuant to the procedures set forth in the "The Exchange Offer" section of the Prospectus; or



if a tender is made pursuant to the guaranteed delivery procedures in the section of the Prospectus entitled "The Exchange OfferGuaranteed Delivery Procedures."

        Holders of Old Notes that are tendering by book-entry transfer to the account maintained by the Exchange Agent at DTC can execute the tender through the Automated Tender Offer Program ("ATOP") for which the Exchange Offer will be eligible. DTC participants that are accepting the Exchange Offer must transmit their acceptance to DTC which will verify the acceptance and execute a book-entry delivery to the Exchange Agent's account at DTC. DTC will then send an agent's message forming part of a book-entry transfer in which the participant agrees to be bound by the terms of the Letter of Transmittal (an "Agent's Message") to the Exchange Agent for its acceptance.

        In order to properly complete this Letter of Transmittal, a holder of Old Notes must:

complete the box entitled, "Description of Old Notes Tendered;"



if appropriate, check and complete the boxes relating to book-entry transfer, guaranteed delivery, Special Issuance Instructions and Special Delivery Instructions;



sign the Letter of Transmittal by completing the box entitled "Sign Here to Tender Your Old Notes in the Exchange Offer;" and



complete the substitute Form W-9.

        Each holder of Old Notes should carefully read the detailed instructions below prior to completing the Letter of Transmittal.

        Holders of Old Notes who desire to tender their Old Notes for exchange, but:

such holder's Old Notes are not immediately available;



such holder cannot deliver their Old Notes, this Letter of Transmittal and all other documents required hereby to the Exchange Agent; or



such holder cannot complete the procedures for book-entry transfer on or prior to the Expiration Date,

must tender their Old Notes pursuant to the guaranteed delivery procedures set forth in the section of the Prospectus entitled "The Exchange OfferGuaranteed Delivery Procedures." See Instruction 2.

        DELIVERY OF DOCUMENTS TO DTC DOES NOT CONSTITUTE DELIVERY TO THE EXCHANGE AGENT. IN ORDER TO ENSURE PARTICIPATION IN THE EXCHANGE OFFER, OLD NOTES MUST BE PROPERLY TENDERED PRIOR TO THE EXPIRATION DATE.

        Holders of Old Notes who wish to tender their Old Notes for exchange must complete columns (1) through (3) in the box below entitled "Description of Old Notes Tendered," and sign the box below entitled "Sign Here to Tender Your Old Notes in the Exchange Offer." If only those columns are completed, such holder of Old Notes will have tendered for exchange all Old Notes listed in column (3) below. If the holder of Old Notes wishes to tender for exchange less than all of such Old Notes, column (4) must be completed in full. In such case, such holder of Old Notes should refer to Instruction 5.

        The Exchange Offer may be extended, terminated or amended, as provided in the Prospectus. During any such extension of the Exchange Offer, all Old Notes previously tendered and not validly withdrawn pursuant to the Exchange Offer will remain subject to such Exchange Offer.

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