Tweed's Philosophy - A Review

One of the great contributors to edgewise technique is Charles H. Tweed (1895-1970), a student and close associate of Angle, who introduced into the literature an “edgewise” appliance, based on the basal bone concept. His method of treatment discarded the first molars as the key units in corrective procedures. This review article is about the life's work of Charles Tweed which traces back to the history, philosophy and technique of Standard edgewise appliance. This evolved as the first speciality of fixed orthodontic appliance, and made it possible to move teeth in all three planes of space with a rectangular wire. Standard edgewise technique was the base foundation from which all the fixed orthodontic appliances have been made. This technique was a major breakthrough and lead to the evolution of fixed orthodontic appliances.