抄録
The sagittal splitting ramus osteotomy known as the modified Obwegeser method and Obwegeser-Dal Pont method have been applied in the surgical correction of jaw deformities at our hospital. However, in the severe mandibular asymmetric case, the inside bone fragment pushes the lateral bone fragment on the side of deviation. Sometimes, as the mandibular condyle was rotated due to this interference, TMJ dysfunction was found.Various complicated operational methods have been reported in these cases. But, simple plastic operation is preferred. Also, it is preferred that the influence to the mandibular condyle rate be small.
This paper describes the application of sagittal splitting ramus osteotomy extremely narrowing width of the sagittal split on the side of deviation. The advantage of this method is that the roll of the mandibular condyle head on the side of deviation decreases. Also bone contact is obtained even when the mandibular ramus is elonga-ted. Also, as rigid fixation with a titanium mini bone plate is carried out, the deviation to the top anterior of the small fragment is prevented.
