Patent ID: 9220579
Filing Date: 2015-12-29
Classification: A61C

Abstract:
1. A method of generating shell appliances configured to resiliently reposition a patient's teeth, the method comprising: receiving a first digital data set representing a first arrangement of the patient's teeth; generating a final position digital data set representing the patient's teeth in a desired or prescribed final arrangement; generating a plurality of intermediate digital data sets representing different intermediate arrangements of the patient's teeth, wherein at least some of the intermediate tooth arrangements represent different orthodontic treatment stages as the patient's teeth are moved from the first arrangement toward the final arrangement; and after generating the plurality of intermediate digital data sets, generating a plurality of shell appliances based on the plurality of intermediate digital data sets, the plurality of shell appliances each having cavities shaped to receive and resiliently reposition teeth along respective movement paths for the teeth between the first arrangement and the final arrangement.