Unilateral sagittal split ramus osteotomy: an alternative for some cases of asymmetric mandibular prognathism |
| |
Authors: | R. Fariña C. Mebus C. Mayer R. Torrealba E. Moreno |
| |
Affiliation: | 1. Department of Oral and Maxillofacial Surgery, Hospital del Salvador, Santiago, Chile;2. Department of Oral and Maxillofacial Surgery, Hospital San Borja Arriarán, Santiago, Chile;3. Department of Oral and Maxillofacial Surgery, Universidad de Chile, Santiago, Chile;4. Department of Oral and Maxillofacial Surgery, Hospital de Carabineros, Santiago, Chile |
| |
Abstract: | The objective of this study was to propose a treatment protocol for patients with lateral prognathism based on the unilateral sagittal split ramus osteotomy (USSRO). This was a prospective study involving 31 patients with lateral prognathism, who required a bilateral sagittal split ramus osteotomy (BSSRO). Two groups were formed using the proposed protocol, with specific inclusion criteria for each group: BSSRO (n = 17) and USSRO (n = 14). Occlusal parameters (dental midline deviation, overbite, and overjet) were measured preoperatively (T0), at model surgery (T1), 1 month postoperative (T2), and 1 year after surgery (T3) and compared. P-values of <0.05 were considered significant. No significant difference was found between the USSRO and BSSRO groups for all occlusal parameters (T0, T1, T2, and T3). In both groups, there was a significant difference between T0 and T1 and no significant difference between T1 and T2 or T1 and T3 in all of the occlusal parameters; the exception was overbite between T1 and T2 in the BSSRO group, which showed a significant difference. No patient in either group showed signs or symptoms of temporomandibular joint dysfunction at T0 or T3. USSRO was found to be a stable alternative in patients with asymmetric mandibular prognathism. At the same time, it reduced the operating time and morbidity when compared to BSSRO. |
| |
Keywords: | facial asymmetry class III asymmetry functional facial asymmetry laterognathism unilateral sagittal split ramus osteotomy asymmetric mandibular prognathism |
本文献已被 ScienceDirect 等数据库收录! |
|