INTRODUCTION: The purpose of this retrospective cephalometric study was to compare the stability of bilateral sagittal split osteotomy (BSSO) with extra-oral vertical ramus osteotomy (VRO) after correction of class III malocclusion by means of bimaxillary orthognathic surgery. METHODS: The sample comprised 51 consecutively treated patients, 38 females and 13 males, with a mean age of 19.1 years. All had a one-piece Le Fort I osteotomy with maxillary advancement and mandibular setback. VRO was performed in 30 cases, and BSSO was performed in 21 cases. Lateral cephalograms were obtained before surgery, within 1 week of surgery and 1 year after surgery. RESULTS: The mean forward movement of the maxilla was 5.6 mm in both groups (p<0.001). The mean horizontal surgical change in the VRO group was 4.4 mm (p<0.001), and in the BSSO group it was 5.4 mm (p<0.001). In the VRO group, the horizontal relapse was 1.2 mm (p<0.001), and in the BSSO group, it was 1.4 mm (p<0.001). CONCLUSION: There was no difference in the stability between the BSSO and VRO groups. The average relapse in the whole sample was 26% of the surgical movement.
INTRODUCTION: The purpose of this retrospective cephalometric study was to compare the stability of bilateral sagittal split osteotomy (BSSO) with extra-oral vertical ramus osteotomy (VRO) after correction of class III malocclusion by means of bimaxillary orthognathic surgery. METHODS: The sample comprised 51 consecutively treated patients, 38 females and 13 males, with a mean age of 19.1 years. All had a one-piece Le Fort I osteotomy with maxillary advancement and mandibular setback. VRO was performed in 30 cases, and BSSO was performed in 21 cases. Lateral cephalograms were obtained before surgery, within 1 week of surgery and 1 year after surgery. RESULTS: The mean forward movement of the maxilla was 5.6 mm in both groups (p<0.001). The mean horizontal surgical change in the VRO group was 4.4 mm (p<0.001), and in the BSSO group it was 5.4 mm (p<0.001). In the VRO group, the horizontal relapse was 1.2 mm (p<0.001), and in the BSSO group, it was 1.4 mm (p<0.001). CONCLUSION: There was no difference in the stability between the BSSO and VRO groups. The average relapse in the whole sample was 26% of the surgical movement.
Authors: Oren Peleg; Reema Mahmoud; Amir Shuster; Shimrit Arbel; Shlomi Kleinman; Eitan Mijiritsky; Clariel Ianculovici Journal: Int J Environ Res Public Health Date: 2022-08-17 Impact factor: 4.614