Stability of unilateral sagittal split ramus osteotomy for correction of facial asymmetry: long-term case series and literature review.
10.5125/jkaoms.2015.41.3.156
- Author:
Seong Geun LEE
1
;
Young Hoon KANG
;
June Ho BYUN
;
Uk Kyu KIM
;
Jong Ryoul KIM
;
Bong Wook PARK
Author Information
1. Ilsan Ye Dental Clinic, Goyang, Korea.
- Publication Type:Case Report
- Keywords:
Unilateral sagittal split ramus osteotomy;
Functional facial asymmetry;
Laterognathism;
Temporomandibular joint
- MeSH:
Facial Asymmetry*;
Follow-Up Studies;
Head;
Humans;
Incidence;
Orthognathic Surgery;
Osteotomy, Sagittal Split Ramus*;
Postoperative Complications;
Prognathism;
Radiography;
Temporomandibular Joint
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2015;41(3):156-164
- CountryRepublic of Korea
- Language:English
-
Abstract:
Bilateral sagittal split ramus osteotomy is considered a standard technique in mandibular orthognathic surgeries to reduce unexpected bilateral stress in the temporomandibular joints. Unilateral sagittal split ramus osteotomy (USSO) was recently introduced to correct facial asymmetry caused by asymmetric mandibular prognathism and has shown favorable outcomes. If unilateral surgery could guarantee long-term postoperative stability as well as favorable results, operation time and the incidence of postoperative complications could be reduced compared to those in bilateral surgery. This report highlights three consecutive cases with long-term follow-up in which USSO was used to correct asymmetric mandibular prognathism. Long-term postoperative changes in the condylar contour and ramus and condylar head length were analyzed using routine radiography and computed tomography. In addition, prior USSO studies were reviewed to outline clear criteria for applying this technique. In conclusion, patients showing functional-type asymmetry with predicted unilateral mandibular movement of less than 7 mm can be considered suitable candidates for USSO-based correction of asymmetric mandibular prognathism with or without maxillary arch surgeries.
