ORTHODONTIC REPOSITIONING APPLIANCES HAVING IMPROVED GEOMETRY, METHODS AND SYSTEMS

摘要

The present invention provides methods and systems including orthodontic tooth positioning appliances. An exemplary appliance can include teeth receiving cavities shaped such that, when worn by a patient, repositioning the patient's teeth from a first arrangement toward a subsequent or target arrangement. Appliances can include a cavity having one or more shaped features or protrusions shaped and/or positioned so as to apply a desired force to a patient's tooth received in the cavity and move the tooth along a desired path or direction.

主权项

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 protrusion 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 an effect due to positioning of the protrusion in the cavity.