Biology of Tooth Movement

Orthodontic Treatment is based on the principle that if prolonged pressure is applied to a tooth tooth movement will occur as the bone around the tooth remodels. Bone is selectively removed in some areas & added in others. In essence the tooth moves through the bone carrying its attachment apparatus with it as the socket of the tooth migrates. Because the bony response is mediated by the periodontal ligament tooth movement is primarily a periodontal ligament phenomenon.