Dentistry – Orthodontics – By mouthpiece-type retainer
Reexamination Certificate
2005-11-15
2005-11-15
O'Connor, Cary E. (Department: 3732)
Dentistry
Orthodontics
By mouthpiece-type retainer
C433S024000
Reexamination Certificate
active
06964564
ABSTRACT:
The present invention provides improved devices, systems and methods for repositioning teeth from an initial tooth arrangement to a final tooth arrangement. Repositioning is accomplished with a system comprising a series of polymeric shell appliances configured to receive the teeth and incrementally reposition individual teeth in a series of successive steps. The individual appliances may be formed from layers having different stiffnesses (elastic moduluses), and the stiffnesses of successive appliances may be different, or both.
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Chishti Muhammad
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Vandenberg H. Robert
Align Technology Inc.
O'Connor Cary E.
Townsend and Townsend / and Crew LLP
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