SANTA CLARA, Calif., Sept 06, 2006 /PRNewswire-FirstCall via COMTEX News Network/ -- Align Technology, Inc. (Nasdaq: ALGN), the inventor of Invisalign, a proprietary method of straightening teeth without wires or brackets, today announced the publication of the first textbook based on the Invisalign system. The Invisalign System, published by Quintessence Publishing, was edited by Dr. Orhan Tuncay, Chairman and Director of the Graduate program of the Department of Orthodontics at Temple University, and includes contributed materials from thirty authors.

"Clinicians know a great deal about the material properties of wires, bonding agents, and differences in wire size, alloy and fatigue. Yet comparatively little exists about the Invisalign system," said Dr. Tuncay. "Understanding the properties of the material, the software, biology and office set-up is essential to manipulating the appliance effectively; and this textbook is designed to address the complete system -- it is not a 'how-to' manual."

The textbook includes chapters on the history of the Invisalign system, Invisalign aligner material and manufacturing, ClinCheck software, Align's quality control measures, diagnostics, tooth movement mechanics in various scenarios and Invisalign office design and technology. Each chapter is authored by experienced Invisalign practitioners, former and current Align employees, and dental industry experts.

Dr. Tuncay is a member of Align Technology's Academic Advisory Board. He is known for his work on the biology of tooth movement, meta analyses, facial esthetics, and 3D imaging and animation of the human face.

"In 34 years of academic experience, I have never seen a more academically-focused and responsible company than Align Technology," said Dr. Tuncay. "This textbook brings the Invisalign system to the major league, next to the straight-wire technique."

For more information or to order The Invisalign System textbook, please visit Quintessence Publishing at http://www.quintpub.com.

About Align Technology, Inc.

Align Technology designs, manufactures and markets Invisalign, a proprietary 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 in your area, please visit www.invisalign.com or call 1-800-INVISIBLE.

     Investor Relations Contact             Press Contact
     Barbara Domingo                        Shannon Mangum Henderson
     Align Technology, Inc.                 Ethos Communication, Inc.
     (408) 470-1000                         (678) 540-9222
     investorinfo@aligntech.com             align@ethoscommunication.com

SOURCE Align Technology, Inc.

Investor Relations: Barbara Domingo of Align Technology, Inc., +1-408-470-1000 or
investorinfo@aligntech.com; or Press: Shannon Mangum Henderson of Ethos
Communication, Inc., +1-678-540-9222 or align@ethoscommunication.com, for Align
Technology, Inc.

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