SANTA CLARA, Calif., May 25, 2005 /PRNewswire-FirstCall via COMTEX/ -- Align Technology, Inc. (Nasdaq: ALGN), the inventor of Invisalign(R), a proprietary method of straightening teeth without wires and brackets, announced today that David S. Thrower, Vice President, Global Marketing, is scheduled to speak at the Gabelli & Company 3rd Annual Dental Conference on Wednesday, June 1, 2005 at 1:10 p.m. EDT / 10:10 a.m. PDT.

A live webcast of the presentation will be available at 1:10 pm EDT on Align's web site at http://investor.aligntech.com . An archived replay will remain on the web site for one month.

About Align Technology, Inc.

Align Technology designs, manufactures and markets Invisalign, a proprietary new 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 April 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 Contacts             Press Contacts
     Barbara Domingo                         Shannon Henderson
     Align Technology, Inc.                  Ethos Communications
     408-470-1000                            678-417-1767
     bdomingo@aligntech.com                  shannon@ethoscommunication.com

SOURCE Align Technology, Inc.

Barbara Domingo of Align Technology, Inc., +1-408-470-1000, or
bdomingo@aligntech.com, or Shannon Henderson of Ethos Communications,
+1-678-417-1767, or shannon@ethoscommunication.com, for Align Technology, Inc.

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