Santa Clara, Calif. - March 30, 2005 - Align Technology, Inc. (Nasdaq: ALGN), the inventor of Invisalign®, a proprietary method of straightening teeth without wires and brackets, today announced plans to release its first quarter 2005 financial results before the market opens on April 20, 2005. The release will be available on the Investor Relations section of the company's web site at http://www.aligntech.com.

On Wednesday, April 20, 2005 at 10:00 a.m. EDT (7:00 a.m. PDT), Thomas M. Prescott, President and Chief Executive Officer, and Eldon M. Bullington, Chief Financial Officer, will host a conference call and web cast to review first quarter 2005 financial results.

To access the web cast please visit the Investor Relations section of Align Technology's website at http://www.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 through 5:30 p.m. EDT on April 20, 2006. Additionally, a telephonic replay of the call can be accessed by dialing (877) 660-6853 with account number 292 followed by # and conference number 142992 followed by #. The replay may 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. EDT on May 5, 2005.

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, please visit www.invisalign.com or call 1-800-INVISIBLE.

Investor Relations Contact
Barbara Domingo
Align Technology, Inc.
(408) 470-1000
investorinfo@aligntech.com

Press Contact:
Shannon Henderson
Ethos Communications, Inc.
(678) 417-1767
shannon@ethoscommunication.com