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Orthodontic repositioning appliances having improved geometry, methods and systems

  • US 10,085,823 B2
  • Filed: 09/18/2014
  • Issued: 10/02/2018
  • Est. Priority Date: 01/29/2008
  • Status: Active Grant
First Claim
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1. An orthodontic appliance, comprising:

  • a shell having teeth receiving cavities shaped to receive and position a patient'"'"'s teeth, one or more of the cavities shaped to apply a resiliently repositioning force to move the patient'"'"'s teeth from the current arrangement toward the target arrangement, the shell comprising a cavity having a ridge, the ridge having a length and a width, the length being greater than the width, the ridge configured to apply a repositioning force to a patient'"'"'s tooth corresponding to a selected tooth movement, the cavity further comprising a modification to a portion of the shell selected to compensate for a contact of the portion of the shell with the patient'"'"'s tooth due to positioning of the ridge in the cavity.

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