A pre-pubescent female patient showed functional class III malocclusion with severe crowding. Generally, functional class III cases are said to be treated easily. But if anterior crossbite is left as it is, some cases shift to skeletal class III which is more difficult to treat. The objectives of treatment at the first stage are to control favorable jaw growth, to gain anterior guidance for TMJ, and to stabilize periodontal tissue in the upper and lower incisors. The upper and lower first premolars were extracted to correct severe crowding. This case was treated with lingual arch and edgewise appliance. Five years after retention, the case has shown stable occlusion and nice aesthetic profile.
著しい叢生を伴う機能性反対咬合症例
