SYSTEMS AND METHODS FOR VARYING ELASTIC MODULUS APPLIANCES
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United States of America Patent
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Nov 11, 2021
app pub date -
Jul 22, 2021
filing date -
Apr 25, 2000
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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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