J Korean Assoc Maxillofac Plast Reconstr Surg.  1997 May;19(2):130-134.

The postoperative condylar posit10n related to temporomandibular discomfort in sagittal split ramus osteotomy

• You JY

Abstract

The sagittal split ramus ostetomy(SSRO) of the mandible has used one of the most popula methods for the correction of various dentofacial deformities, especially mandibular prognathism. In SSRO, there are produced bony gap following mandible setback because of mandible flaring. For this reason, the condylar axis may be changed due to bony approximation both segment in three dimension more mesio-laterally. According to change of condylar position, the condition of TMJ structure are changed and change of TMJ structure are changed and change of TMJ symptoms are suggested theoretically, and the correction of malocclusion by SSRO may improve the TMJ symptoms by important of feeding difficulties. The purpose of this study was to determine relationship between expected alterations in condylar position and suggested TMJ symptoms producted by change of condylar position. TMJ symptoms of 15patients who had operated SSRO are checked at about postoperative 6 month ranging 5~11 month. Anterior-posterior position of condyle which was comparison preoperative position, was classified 5 groups. The author tried to identify relationship between positional change of condyle and TMJ discomfort.

MeSH Terms

Axis, Cervical Vertebra
Dentofacial Deformities
Malocclusion
Mandible
Osteotomy, Sagittal Split Ramus*
Prognathism
Temporomandibular Joint