Dr. Percy Raymond Begg was a brilliant orthodontist who discovered a unique method of moving teeth. If one were to list the persons who made great contributions to world of clinical orthodontics, Dr. Begg's name is sure to find a place amongst the top few. He not only created a distinct form of mechanotherapy, but also influenced the theory and practice of other modes of fixed appliance treatment. He provided many thousands of children and adults with amazing corrections of their dental and facial deformities and these benefits continue to be experienced by patients all over the world because of his willingness to share his knowledge.