A transoral approach for three-dimensional repositioning of the proximal segment after mandibular sagittal split ramus osteotomy.

Maintenance of the presurgical position of the proximal segment is extremely important after a sagittal split ramus osteotomy (SSRO) to reduce the incidence of short-term relapse or temporomandibul~ joint dysfunction, particularly when rigid fixation is used.‘” The use of numerous techniques and devices has been proposed to solve the problem of condylar repositioning.4-” In 1985, Luhr’ described the positioning plate technique for the repositioning of the proximal segment. This system was the first to afford the accurate repositioning of the proximal segment in three dimensions.8 Several additional three-dimensional techniques of repositioning the proximal segment have been reported in the past 10 years, but all of them require skin in~isions.s,9,‘1 We have recently developed a transoral approach for placement of the positioning plate in repositioning of the proximal segment. In this report, we introduce this repositioning system and technique.