1. Father of orthodontics E .H. Angle
2. Orthodontics is a term coined by le fouloun (FRANCE)
3. Orthodontia means orthos correct right, dont tooth, ics science.
4. Orthodontics is a study of dental and oral development it seeks to detrmine the factore that control growth rocesses to the end that a normal function and anatomical relationshi of these arth may be realized and aims to learn the influence necessary to maintain such condition. (Mc coy, 1931.