Holographic determination of rigid-body motions, and application of the method to orthodontics.

A method for holographic determination of rigid-body motions is presented. In the calculations, parameters characterizing three or more arbitrarily chosen points on the object are used to evaluate translations and rotations, which, in turn, are entered in subsequent analysis of relative motions of deformed points on the object. This method finds particular applications in studies of orthodontic tooth movement.