Align Technology to Announce Fourth Quarter and 2007 Year End Financial Results on January 29, 2008


SANTA CLARA, Calif., Jan. 4 - Align Technology, Inc. (NASDAQ:ALGN), the inventor of Invisalign®, a proprietary method of straightening teeth without wires and brackets, announced today that the Company will report fourth quarter and 2007 year end financial results on Tuesday, January 29, 2008, after the close of market. Financial results will be released over PR Newswire and First Call and will be available on the Investor Relations section of the Company's website at investor.aligntech.com/.

Following the press release, Align Technology executives will host a conference call to review fourth quarter and 2007 year end financial results. The conference call will begin at 4:30 p.m. ET (1:30 p.m. PT) and will also be available as an audio web cast live via the Internet. To access the web cast, please visit the Investor Relations section of Align Technology's website at investor.aligntech.com/. To access the conference call, please dial 201-689-8341 approximately fifteen minutes prior to the start of the call.

If you are unable to listen to the call, an archived web cast will be available beginning approximately one hour after the call's conclusion and will remain available for approximately 12 months. Additionally, a telephonic replay of the call can be accessed by dialing 877-660-6853 with account number 292 followed by # and conference number 268148 followed by #. The replay must be accessed from international locations by dialing 201-612-7415 and using the same account and conference numbers referenced above. The telephonic replay will be available through 5:30 p.m. ET on February 12, 2008.

Align Technology Executive to Present At JPMorgan Healthcare Conference (corrected time)

In addition, Thomas M. Prescott, president and chief executive officer of Align Technology, is scheduled to speak at the 26th Annual JPMorgan Healthcare Conference. Both the presentation and breakout session, as noted below, will be web cast live via the Investor Relations section of Align Technology's website at investor.aligntech.com/. An archived replay will remain on the web site for approximately three months. Details follow:

Conference: JPMorgan Healthcare Conference
Date: Wednesday, January 9, 2008
Presentation: 2:30 to 2:55 p.m. Eastern Time (corrected time)
Breakout: 3:00 to 3:25 p.m. Eastern Time (corrected time)

About Align Technology, Inc.

Align Technology designs, manufactures and markets Invisalign, a proprietary method for treating malocclusion, or the misalignment of teeth. Invisalign corrects malocclusion using a series of clear, nearly invisible, removable appliances that gently move teeth to a desired final position. Because it does not rely on the use of metal or ceramic brackets and wires, Invisalign significantly reduces the aesthetic and other limitations associated with braces. Invisalign is appropriate for treating adults and older teens. Align Technology was founded in March 1997 and received FDA clearance to market Invisalign in 1998.

To learn more about Invisalign or to find a certified Invisalign doctor in your area, please visit www.invisalign.com/ or call 1-800-INVISIBLE.

FCMN Contact: sstacy@aligntech.com

Source: Align Technology, Inc.

CONTACT: Investors, Shirley Stacy of Align Technology, Inc.,
+1-408-470-1150, sstacy@aligntech.com;

or press, Shannon Mangum Henderson of
Ethos Communication, Inc., +1-678-540-9222, align@ethoscommunication.com, for Align Technology, Inc.

Web site: www.invisalign.com/
http://investor.aligntech.com/

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