Second Annual Invisalign® Summit Hosts Top Orthodontists at Conference in Las Vegas Santa Clara, Calif. – November 12, 2002 – More than 1,000 attendees from ten countries gathered this past weekend, by invitation, at the second annual Invisalign Summit in Las Vegas. Each year Align Technology, Inc. (Nasdaq: ALGN), the inventor of Invisalign®, a proprietary method of straightening teeth without wires and brackets, invites top Invisalign doctors and their staff to share clinical techniques, case studies, new product developments and best practices at the Summit. Attendees enjoyed presentations from Align executives and clinical team members, as well as lectures and workshops by expert Invisalign practitioners from universities and private practices around the country.

“The Summit attendees represent the top Invisalign practices around the world. These very experienced doctors and staff members gained new insight and techniques to help provide their patients with the best treatment available,” said Tom Prescott, president and chief executive officer of Align. “We were particularly pleased to share treatment successes with teen patients, as well as data from ongoing Invisalign research studies.”

This year’s Summit theme, “Getting Great Results with Invisalign,” focused on optimal treatment planning and use of Align’s proprietary ClinCheck® software as keys to success with a broad range of patients, including adolescent and complex cases.

Highlights from the General Session included:

• Dr. Arthur A. Dugoni, dean and professor of orthodontics at The University of the Pacific School of Dentistry, shared his thoughts on being open to new innovations in “The Challenge of Change in Orthodontics.”
• Dr. Ross Miller, Align Technology chief clinical officer, presented the keynote address on the clinical and practice components necessary to “Getting Great Results with Invisalign.”
• Dr. Timothy Wheeler, professor of orthodontics at The University of Florida, reviewed data and initial findings from several Invisalign research studies being conducted at the university and practice level.

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.

To learn more about Invisalign or to find a certified Invisalign doctor, please visit www.invisalign.com or call 1-800-INVISIBLE.

This release may contain forward-looking statements based on Align Technology's current expectations. These statements include, but are not limited to, statements addressing the attendance at the conference. 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 Technology's successful enforcement of its intellectual property and avoidance of infringement on third party patents, Align Technology's ability to establish and maintain reliable, high-volume manufacturing capacity in the U.S. and internationally and Align Technology's ability to manage its significant growth and retain its key personnel. These factors, as well as 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, as well as other reports and documents filed from time to time with the Securities and Exchange Commission.