Abstract
A case of maxillary excess is rare in our country. In this case, it is necessary for upper jaw to be moved enough backward movement for obtained satisfactry esthetic result. However, it is difficult to aquire enough backward movement for improvement of functional and esthetic obstruction.
In our case, maxillary excess with labioversion for improvement of functional and esthetic obstruction, it was necessary for to move the upper jaw backward 23mm. However, it was impossible to improve an esthetic obstruction by a surgical method, Le Fort Iosteotomy or alveoler segmental osteotomy.
Therefore, it was necessary to devise a preoperative orthodontic treatment.
Upper first molars were extracted before preoperative orthodontic treatment, and so it was possible to improve functional and esthetic obstruction by simple surgical method, followed by anterior alveolar segmental osteotomy for maxilla.
