Postsurgical Stability of Mandible Following Sagittal Split Advancement Osteotomy Using Titanium Miniplate Fixation in Skeletal Class II Patients

Abstract

The purpose of this study was to investigate the postsurgical stability of the mandible in Japanese skeletal Class II patients who underwent sagittal split ramus osteotomy (SSRO). Twelve female patients who underwent surgical mandibular advancement with rigid osseous fixation using titanium miniplates were selected for this study. Seven patients underwent mandibular advancement only, and 5 patients underwent mandibular advancement in conjunction with genioplasty. The postsurgical stability of the mandible was evaluated by cephalometric analysis. As the result, the average mandibular position was stable after SSRO. No relationship was observed between the amount of mandibular displacement following surgery and that during postsurgical treatment, as well as between the amount of mandibular displacement and the mandibular plane angle immediately before surgery.