Align Technology, Inc.
Orthodonitic appliance with precision cutout

Abstract:

An orthodontic positioning device including a patient removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to receive and apply a resilient positioning force to a patient's teeth provided in one of an upper jaw and a lower jaw and comprising a cutout operable to expose an orthodontic elastic band receiving member. The cutout corresponds to a material removed along a gingival edge of the patient removable orthodontic tooth positioning appliance and is operable to be disposed over a tooth, is shaped to extend between a first point of a gingival line of the tooth and a second point of the gingival line of the tooth, and has a gingival-facing surface arrangeable between the elastic band receiving member and an occlusal surface of the tooth wherein the cutout is arcuate