Align Technology, Inc. Announces Date of its Second Quarter 2002 Results and Conference Call Santa Clara, Calif. – July 17, 2002 -- 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 second quarter 2002 financial results before the market opens on July 24, 2002. The earnings release will be available at the investor relations portion of the company's website at www.invisalign.com.

On Wednesday, July 24, 2002 at 10:00 a.m. EDT (7:00 a.m. PDT), Thomas Prescott, president and chief executive officer, and Stephen Bonelli, chief financial officer, will host a conference call to discuss the second quarter 2002 financial results. A question and answer session will follow.

To listen to the call, please dial (415) 247-8527 approximately ten minutes prior to the start of the call and enter reservation number 20746010. If you are unable to listen to the call, a taped replay will also be available beginning approximately one hour after the call's conclusion and will remain available until 10:00 a.m. EDT on July 27, 2002 and can be accessed by dialing 800-633-8284 with reservation number 20746010. The replay may be accessed from international locations by dialing 402-977-9140 using the same reservation number.

Additionally, the conference call will be broadcast live over the Internet and can be accessed through the investor relations portion of Align's website at www.invisalign.com. Please access the website at least fifteen minutes prior to the start of the call to register, download, and install any necessary audio software. An archived webcast replay of the call will also be available at www.invisalign.com.

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 March 1997 and received FDA clearance to market Invisalign in 1998.

The foregoing information represents Align Technology's outlook only as of the date of this press release, and Align undertakes no obligation to update or revise any forward-looking statement, whether as a result of new developments or otherwise.