Patent ID: 8651859

Claim:
A computer program for use in a system for defining a fit between a set of upper and lower teeth of a patient and planning orthodontic treatment, the computer program residing on a computer-readable storage medium and comprising instructions operable to cause a programmable processor to: determine an occlusion from a computer model of a set of upper and lower teeth of a patient's teeth; model the set of teeth in a first plurality of different arrangements representing successive repositioning of the patient's teeth from a first arrangement toward a first desired arrangement; output data for visualizing and/or manufacturing a patient-removable appliance for each arrangement of the first plurality of arrangements, the patient-removable appliances having teeth-receiving cavities, the cavities of successive appliances having different geometries shaped to receive and resiliently reposition the teeth from the first arrangement toward a first successive arrangement; and generate revised models of the patient's teeth in a second plurality of different arrangements based on mid-treatment dental information, the second plurality representing successive repositioning of the patient's teeth from a second arrangement toward a second desired arrangement.