Patent ID: 7837464

Claim:
A computer implemented method of forming an indirect bonding tray, the method comprising: obtaining, at a computer including a processor and memory, an electronic model image of teeth of a patient based on a corresponding cast of the teeth, wherein the teeth of the cast are arranged in start positions; storing in the memory of the computer an array of start coordinates representing the start positions of the teeth of the electronic model image; obtaining at the computer instructions to modify the electronic model image to move the teeth of the electronic model image to finish positions; storing in the memory of the computer an array of finish coordinates representing the finish positions of the teeth of the electronic model image; obtaining at the computer a first array of bracket coordinates representing bracket mark locations for one or more of the teeth relative to the finish positions of the teeth; and transforming, using the processor of the computer, the bracket coordinates of the first array with an inverse matrix to obtain a second array of bracket coordinates, the bracket coordinates of the second array representing bracket mark locations for one or more of the teeth relative to the start positions of the teeth, the inverse matrix being generated based on the stored start coordinates and stored finish coordinates of the teeth.