Presence of mandibular third molars during bilateral sagittal split osteotomy increases the possibility of bad split but not the risk of other post-operative complications |
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| Institution: | 1. Department of Oral and Maxillofacial Surgery, Leiden University Medical Centre, Leiden, The Netherlands;2. Department of Oral and Maxillofacial Surgery, Amphia Hospital, Breda, The Netherlands;3. Department of Medical Statistics and Bioinformatics, Leiden University Medical Centre, Leiden, The Netherlands;1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, 2-1-1, Kita-senzoku, Ohta-ku, 145-8515 Tokyo, Japan;2. Department of Orthodontics, School of Dentistry, Showa University, 2-1-1, Kita-senzoku, Ohta-ku, 145-8515 Tokyo, Japan;3. Department of Information Science, Faculty of Arts and Sciences at Fujiyoshida, Showa University, 4562, Kamiyoshida, Fujiyoshida, 403-0005 Yamanashi, Japan;1. Assistant Professor, Department of Oral and Maxillofacial Surgery, Shiraz University of Medical Sciences, Shiraz, Iran;2. Assistant Professor, Department of Oral and Maxillofacial Surgery, Shiraz University of Medical Sciences, Shiraz, Iran;3. Student of Dentistry, Shiraz Dental Faculty, Shiraz University of Medical Sciences, Shiraz, Iran;4. Associate Professor, Department of Oral and Maxillofacial Radiology, Biomaterial Research Center, Shiraz University of Medical Sciences, Shiraz, Iran;6. Assistant Professor, Department of Oral and Maxillofacial Surgery, Yasouj University of Medical Sciences, Yasouj, Iran;1. Department of Oral and Maxillofacial Surgery, Amphia Hospital, Breda, The Netherlands;2. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. J.P.R. van Merkesteyn), Leiden University Medical Centre, Leiden, The Netherlands;3. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. D. Bloomquist), University of Washington, Seattle, USA;4. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. J. de Lange), Amsterdam Medical Centre, Amsterdam, The Netherlands;1. Department of Oral and Maxillofacial Surgery, Leiden University Medical Centre, Leiden, The Netherlands;2. Department of Oral and Maxillofacial Surgery, Amphia Hospital, Breda, The Netherlands;1. Assistant Professor of Oral and Maxillofacial Surgery, Centre Hospitalier Universitaire (CHU) de Québec, Université Laval, Hôpital de l’Enfant-Jésus, Quebec, Quebec, Canada;2. Dental student, Centre Hospitalier Universitaire (CHU) de Québec, Université Laval, Hôpital de l’Enfant-Jésus, Quebec, Quebec, Canada |
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| Abstract: | Timing of third molar removal in relation to bilateral sagittal split osteotomy (BSSO) is controversial, especially with regard to post-operative complications. We investigated the influence of mandibular third molar presence on complications after BSSO with sagittal splitters and separators, by a retrospective record review of 251 patients (502 surgical sites). Mandibular third molars were present during surgery at 169 sites and removed at least 6 months preoperatively in 333 sites. Bad splits occurred at 3.0 % (5/169) and 1.5% (5/333) of the respective sites. Presence of mandibular third molars significantly increased the risk of bad splits (OR 1.08, CI 1.02–1.13, p < 0.01). The mean incidences of permanent neurosensory disturbances, post-operative infection, and symptomatic removal of the osteosynthesis material were 5.4% (OR, 0.89; 95% CI, 0.79–1.00; p = 0.06), 8.2% (OR, 1.09; 95% CI, 0.99–1.20; p = 0.63), and 3.4% (OR, 0.97; 95% CI, .92–1.03; p = 0.35) per site, respectively, without a significant influence of mandibular third molar status. In conclusion, the presence of mandibular third molars during surgery increases the possibility of bad split but does not affect the risk of other complications. Therefore, third molars can be removed concomitantly with BSSO using sagittal splitters and separators. |
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| Keywords: | Osteotomy Sagittal split ramus Mandibular osteotomy Post-operative complications Third molar Risk |
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