Patent ID: 7387511

Claim:
A computer implemented method of automatic placement of brackets onto locations on a cast for creation of an indirect bonding tray, the method comprising: displaying an electronic model image corresponding to a cast of a patient, the cast including the individual teeth of the patient in start positions; storing an array of start coordinates for the individual teeth; storing an array of finish coordinates when the teeth have been moved to finish positions; storing an array of bracket placement locations for one or more of the individual teeth with respect to the finish positions; calculating bracket placement locations in connection with the start positions based on the stored start and finish coordinates, wherein calculating the bracket placement locations in connection with the start positions includes transforming the bracket placement locations with respect to the finish positions with an inverse matrix, the inverse matrix being generated based on the stored start coordinates and, finish coordinates for the individual teeth, and wherein the bracket placement locations can be viewed with the teeth in the start positions; and automatically placing brackets onto the cast at the bracket placement locations calculated in connection with the start positions.