Unilateral sagittal split ramus osteotomy: an alternative for some cases of asymmetric mandibular prognathism. Issue 5 (May 2018)

• Record Type: Journal Article
• Authors: Fariña, R.; Mebus, C.; Mayer, C.; Torrealba, R.; Moreno, E.
• Is Part Of: International journal of oral & maxillofacial surgery. Volume 47:Issue 5(2018:May)
• Page Start: 630
• Page End: 637
• Publication Date: 2018-05
• Subjects: facial asymmetry -- class III asymmetry -- functional facial asymmetry -- laterognathism -- unilateral sagittal split ramus osteotomy -- asymmetric mandibular prognathism; Mouth -- Surgery -- Periodicals; Maxilla -- Surgery -- Periodicals; Dentistry -- Periodicals; Dentistry, Operative; Oral Surgical Procedures; Surgery, Oral; Dentistry; Maxilla -- Surgery; Mouth -- Surgery; Electronic journals; Periodicals; 617.52059
• DOI: 10.1016/j.ijom.2017.11.010
• Languages: English
• ISSNs: 0901-5027

Abstract

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.