Align Technology Introduces Invisalign G4

SAN JOSE, Calif., Oct. 7, 2011 (GLOBE NEWSWIRE) -- Align Technology, Inc.
(Nasdaq:ALGN) today announced Invisalign(R) G4, the next generation of
SmartForce(R) clinical innovations, designed to address some of the most
significant treatment challenges doctors encounter. The new and improved
SmartForce features in Invisalign G4 are engineered to help doctors achieve even
better clinical results for open bite treatments, more predictable movement of
upper laterals, and improved root control for canines and central incisors. "In
the year since we launched Invisalign G3, research with Invisalign providers has
shown that the SmartForce features increase a doctor's likelihood of prescribing
Invisalign and help the doctor to deliver the results they expect in more
clinical applications," said Sheila Tan, Align Technology's vice president,
marketing and chief marketing officer. "Invisalign G4 expands on the Invisalign
G3 foundation which first introduced new aligner and software features that make
it easier to use Invisalign when treating Class I and Class II patients."

SmartForce features, such as Optimized Attachments and the Power Ridge(R)
features, are engineered to deliver the forces needed to achieve predictable
tooth movements. Based on biomechanical principles, SmartForce features are
customized for each tooth using advanced virtual modeling, and are positioned
precisely to deliver the proper forces. New Invisalign G4 clinical innovations
are engineered to help doctors achieve:

− Better Clinical Outcomes for Open Bites: new multi-tooth approach for
open bite treatment and improved Optimized Extrusion Attachments are designed to
improve clinical outcomes when treating anterior open bites.

− Improved Predictability for Upper Laterals: new Optimized Multi-Plane
Movement features are designed to improve control of upper laterals undergoing
extrusion along with rotation and/or crown tip.

− Greater Root Control for Canines and Central Incisors: new Optimized
Root Control Attachments provide greater mesio-distal root control for canines
and central incisors.

In addition to these new features, Optimized Extrusion Attachments for anterior
teeth have been improved to better deliver the force needed for great finishes,
and Optimized Attachments that were introduced with Invisalign G3 can now be
used in conjunction with Precision Cuts, where applicable, when treating Class
II and Class III patients with Invisalign.

The expanded Invisalign G4 product features will be available on Invisalign
Full, Invisalign Teen, Invisalign Assist, Invisalign Express 10 (previously
Invisalign Express), and Invisalign Lite (for International markets) at no
additional cost to Invisalign-trained doctors worldwide starting November 14,
2011.

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 teens. Align
Technology was founded in March 1997 and received FDA clearance to market
Invisalign in 1998. The Invisalign product family includes Invisalign,
Invisalign Teen, Invisalign Assist, Invisalign Express 10, and Vivera Retainers.
To learn more about Invisalign or to find an Invisalign trained doctor in your
area, please visit www.invisalign.com.

Cadent Holdings, Inc. is a subsidiary of Align Technology and is a leading
provider of 3D digital scanning solutions for orthodontics and dentistry. The
Cadent family of products includes iTero and iOC scanning systems, OrthoCAD
iCast, OrthoCAD iQ and OrthoCAD iRecord. For additional information, please
visit www.cadentinc.com.

CONTACT: Investor Relations Contact
Shirley Stacy
Align Technology, Inc.
(408) 470-1150
sstacy@aligntech.com

Press Contact
Shannon Mangum Henderson
Ethos Communication, Inc.
(678) 261-7803
align@ethoscommunication.com