Obwegeser II osteotomy (transoral angle osteotomy) for open bite with skeletal class III deformity |
| |
| Institution: | 1. Department of Orthodontics, UNICID (University of São Paulo City), São Paulo, SP, Brazil;2. Laboratory of Neuroimaging, Department of Neurology, UNICAMP (University of Campinas), Campinas, SP, Brazil;3. Department of Neurology, UNICAMP (University of Campinas), Campinas, SP, Brazil;1. Group of Research and Study on Laser in Dentistry (GEPLO), Department of Surgery and Integrated Clinic, Division of Periodontics, São Paulo State University, UNESP (“Univ. Estadual Paulista”), Araçatuba, SP, Brazil;2. Department of Periodontics, University Center of the Educational Foundation of Barretos (UNIFEB), Barretos, SP, Brazil;3. Department of Clinic and Surgery, Federal of University Alfenas, Alfenas, MG, Brazil;4. Department of Basic Science, São Paulo State University, UNESP (“Univ. Estadual Paulista”), Araçatuba, SP, Brazil;1. Department of Plastic and Reconstructive Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Republic of Korea;2. Department of Plastic and Reconstructive Surgery, Keimyung University School of Medicine, Daegu, Republic of Korea;3. Department of Occupational and Environmental Medicine, Sungkyunkwan University Changwon Samsung Medical Center, Changwon, Republic of Korea;4. Department of Plastic and Reconstructive Surgery, Institute of Health Sciences, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Republic of Korea |
| |
| Abstract: | IntroductionThis study evaluated postoperative stability after Obwegeser II osteotomy (transoral angle osteotomy, first reported by Obwegeser 1973) for severe open bite with mandibular prognathism.Patients and methodsThis retrospective study reviewed 20 consecutive patients who underwent only mandibular Obwegeser II osteotomy to correct open bite and mandibular prognathism. Lateral cephalograms were evaluated preoperatively (T1), immediate postoperatively (T2) and at least 6 months after the surgery (T3). Surgical and postsurgical changes in cephalometric measurements were evaluated statistically.ResultsOpen bite with skeletal class III malocclusion was corrected by the Obwegeser II osteotomy alone. After an average of 9.9 ± 5.2 mm of mandibular setback with open bite closure (T2–T1, over-bite change, 5.7 ± 2.4 mm) by counter-clockwise rotation of the mandible, the patients showed 0.8 ± 1.7 mm of horizontal relapse (p > 0.05), 1.1 ± 1.7 mm of vertical relapse at the B point (p = 0.011) and ?0.2 ± 1.6 mm of over-bite change postoperatively (T3–T2).DiscussionWith the adequate control of the condylar position with rigid internal fixation, Obwegeser II osteotomy showed acceptable stability after the correction of open bite with mandibular prognathism without a simultaneous maxillary osteotomy. An isolated Obwegeser II osteotomy can be considered a reliable option in cases with moderate to severe open bite with mandibular prognathism when the maxillary osteotomy is not needed if the patients have a well-positioned maxilla. |
| |
| Keywords: | Obwegeser II osteotomy Mandibular prognathism Open bite Transoral angle ostectomy |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
