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                                                     Filed by OrthAlliance, Inc.
                           Pursuant to Rule 425 under the Securities Act of 1933
                              and deemed filed pursuant to Rule 14a-12 under the
                                                 Securities Exchange Act of 1934

                                             Subject Company: OrthAlliance, Inc.
                                                    Commission Number: 000-22975


In connection with the proposed merger, OCA and OrthAlliance will file a proxy
statement/prospectus with the Securities and Exchange Commission ("SEC").
Investors are urged to read the proxy statement/prospectus, because it will
contain important information about the merger, OCA and OrthAlliance. After the
proxy statement/prospectus is filed with the SEC, the proxy statement/prospectus
will be available free of charge, both on the SEC's web site (www.sec.gov) and
from OCA and OrthAlliance by directing a request to Orthodontic Centers of
America, Inc., 5000 Sawgrass Village Circle, Suite 30, Ponte Vedra Beach, FL
32082, Attention: Investor Relations, or to OrthAlliance, Inc., 21535 Hawthorne
Boulevard, Suite 200, Torrance, CA 90503, Attention: Investor Relations.
OrthAlliance and its directors and officers may be deemed to be participants in
the solicitation of proxies with respect to a shareholder meeting to be held in
connection with the merger.  Information  about the participants in the
solicitation, including their interests in shares of OrthAlliance's common
stock, is set forth in OrthAlliance's Annual Report on Form 10-K for the year
ended December 31, 2000 filed with the SEC. Investors may obtain additional
information regarding the interests of OrthAlliance and its directors and
officers in the merger by reading the proxy statement/prospectus when it becomes
available. This does not constitute an offer of any securities for sale.

A.    LETTER FROM W. DENNIS SUMMERS


October 11, 2001


Dear Member:

I am pleased to let you know that we have made significant progress on the
merger between OCA and OrthAlliance. The SEC has declared OCA's filing effective
and the Proxy Statement has been mailed to our shareholders. If you are a
shareholder, you should be receiving your Proxy Statement by next week. Included
in that mailing will be a Proxy Card that you will need to return with your vote
on the merger agreement.

We are very pleased to have the governmental phase behind us so that we can move
to the shareholder approval process. The shareholders' meeting will be on
Wednesday, November 7, 2001. We expect that, if shareholders approve the merger
agreement, we will close the merger shortly after the meeting.


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We are working on additional communication materials with OCA, which we hope to
have available in the next few days. In the meantime, we wanted to make sure
that you knew that we had moved to the next phase in our merger.

If you have any questions regarding these matters, please feel free to contact
me or any members of the senior management teams at OrthAlliance or OCA. We
appreciate your continued support.

Sincerely,

W. Dennis Summers
Chairman and President
OrthAlliance, Inc.

In connection with the proposed merger, OCA has filed a registration statement
on Form S-4 with the Securities and Exchange Commission ("SEC"). Investors are
urged to read the proxy statement/prospectus that is a part of the registration
statement, because it contains important information about the merger, OCA and
OrthAlliance. The registration statement and the proxy statement/prospectus is
available free of charge, both on the SEC's web site (www.sec.gov) and from OCA
and OrthAlliance by directing a request to Orthodontic Centers of America, Inc.,
5000 Sawgrass Village Circle, Suite 30, Ponte Vedra Beach, FL 32082, Attention:
Investor Relations, or to OrthAlliance, Inc., 21535 Hawthorne Boulevard, Suite
200, Torrance, CA 90503, Attention: Investor Relations. OrthAlliance and its
directors and officers may be deemed to be participants in the solicitation of
proxies with respect to a shareholder meeting to be held in connection with such
merger. Information about the participants in the solicitation, including their
interests in shares of  OrthAlliance's  common stock,  is set forth in
OrthAlliance's Annual Report on Form 10-K for the year ended December 31, 2000
filed with the SEC. Investors may obtain additional information regarding the
interests of OrthAlliance and its directors and officers by reading the proxy
statement/prospectus.