Align Technology To Present At The Bear Stearns 14th Annual Health Care Conference

Santa Clara, Calif. - September 10, 2001 -- Align Technology, Inc. (Nasdaq: ALGN), the inventor of the Invisalign^® System, a proprietary method of straightening teeth without unsightly wires and brackets, today announced that it will present at the Bear Stearns 14th Annual Health Care Conference in New York on Wednesday, September 12, 2001, at 8:00 am EDT. Zia Chishti, CEO will present on behalf of Align Technology.

In conjunction with the company's presentation at Bear Stearns, a live web cast will be available to the public over the Internet at 8:00 am EDT via the Investor Relations area of the Align Technology website at www.invisalign.com and through www.twst.com/econf/mm/bsc/algn.html. Listeners are advised to log on to the event at least 15 minutes prior to the scheduled broadcast. An archive of the web cast will be available at www.invisalign.com for 10 days following the event.

About Align Technology

Align Technology designs, manufactures and markets the Invisalign System, a proprietary new method for treating malocclusion, or the misalignment of teeth. The Invisalign System 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, the Invisalign System 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 the Invisalign System in 1998.

This release may contain forward-looking statements. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially are discussed in more detail in Align Technology's Annual Report on Form 10-K, its most recent Quarterly Report on Form 10-Q, as well as other reports and documents filed from time to time with the Securities and Exchange Commission.