The introduction of cephalometrics has opened new perspectives in Orthodontic diagnosis and research. Superimposition of serial cephalometric radiographs has been an invaluable tool for the orthodontist in evaluating (spatial change of craniofacial structures) growth and the interaction of mechanotherapy. Changes in the skeleton, dentition, and soft tissues over a period of time can be monitored by superimposing the serial tracings taken at different times. This book walks the reader through some of the most important superimposition methods for orthodontic planning.