Santa Clara, Calif. - August 30, 2001 -- Align Technology, Inc. (Nasdaq: ALGN), the inventor of the Invisalign^® System, a proprietary method of straightening teeth without unsightly wires and brackets, reached a significant company milestone today with the shipment of its one millionth custom-made aligner. Align began using the nearly invisible aligners in July 1998 to successfully treat malocclusion, or misalignment of teeth.

In less than two years, Align has successfully met the initial challenges of quickly, accurately and economically scaling up key areas of production to mass manufacture this custom-made product. Align has developed new technologies and processes to accurately capture dental anatomy, perform orthodontic treatments digitally, and translate that digital information into a series of clear, nearly invisible orthodontic appliances, or aligners.

"This milestone confirms Align's unique ability to combine cutting edge technology, orthodontic expertise and mass production to impact a dental industry that has seen few significant technological advances in the past several decades," said Zia Chishti, chairman and chief executive officer of Align Technology. "Shipping our one millionth customized aligner is evidence of both our manufacturing progress and the enthusiastic consumer demand for Invisalign."

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 contains forward-looking statements based on Align Technology's current expectations. Forward-looking statements in this release include, without limitation, references to Align's ability to meet increasing demand for the Invisalign System through the use of manufacturing technologies and Align's improvement of its manufacturing processes and proprietary software. 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. These factors include Align Technology's ability to achieve profitability, the ability to control costs and continue to achieve efficiencies, the adoption by orthodontists, dentists and consumers of the Invisalign System, Align's successful enforcement of its intellectual property and avoidance of infringement on third party patents, Align's ability to establish and maintain reliable, high-volume manufacturing capacity and Align's ability to manage its significant growth and retain its key personnel. A number of other 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.