하악골 시상골 절단술시 하악골 과두의 중심 교합위의 보존

Conserving the original centric occlusion position in bilateral sagittal split ramus osteotomy

The sagittal split ramus osteotomy (SSRO) of the mandible has been widely accepted as a surgical correction of mandibular deformities since 1950 s. Relapse after the SSRO, however, is one of the commonly mentioned complications after the SSRO. This complication may be partly due to displacement of condylar segment, which was well documented. Therefore it is important to bring the condylar segment into its original position, especially with the consideration of rigid fixation which does not permit any compensating changes between the condylar and tooth-bearing segment. This paper demonstrates a method of conserving the original position of condylar segment which was documented as a vital part of relapse after the SSRO.