TY - JOUR ID - 2050 TI - Complications of Bilateral Sagittal Split Osteotomy in Patients with Mandibular Prognathism JO - Journal of Dental Materials and Techniques JA - JDMT LA - en SN - 2322-4150 AU - Eshghpour, Majid AU - Shaban, Baratolah AU - Shahakbari, Reza AU - Mahvelati Shamsabadi, Reza AU - Nejat, Amir Hossein AD - Dental Research Center, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran AD - Dental Material Research Center, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran AD - Department of Orthodontics, Hamedan University of Medical Sciences, Hamedan, Iran AD - General Dentist, Mashhad, Iran Y1 - 2013 PY - 2013 VL - 3 IS - 1 SP - 1 EP - 10 KW - Lip paresthesia KW - mandibular prognathism KW - Muscular function KW - sagittal split osteotomy DO - 10.22038/jdmt.2013.2050 N2 - Introduction: Bilateral sagittal split osteotomy (BSSO) of mandible is vastly used in treatment of mandibular deficiencies and discrepancies. Since this method could affect esthetic as well as function, evaluating these effects from various aspects is crucial. This study assessed the effects of this technique on the function of masseter muscle, jaw movements, and sensory changes along with failures in screws used for fixation. Methods: 48 patients with mandibular prognathism participated. Electromyography (EMG) of the masseter muscle; limits of jaw movements including maximum opening (MIO), protrusive (PM), lateral movements (LLE and LRE); presences of sensory changes and two point discrimination test; and number of removed screws were recorded at the baseline, 3 months, and 6 months after surgery. Results: EMG activity of masseter decreased significantly 3 months after the surgery. However, after 6 months the masseter activity revealed no statistically significant difference with baseline activity. There was a significant decrease in MIO and PM after 3 months. The 6 month measurement of MIO and PM was also lower than baseline. However, no difference was observed between LRE and LLE in both follow up sessions. Among 46 patients, 27 patients developed lip paresthesia 3 months after surgery. After 6 month, lip paresthesia remained in 11 patients. Among 276 screws used for fixation 3 screws removed due to exposure to oral cavity and 2 due to patient discomfort. Conclusion: As BSSO in patients with mandibular prognathism revealed temporary functional and sensory changes, it is a safe and appropriate method in orthognathic surgery. UR - https://jdmt.mums.ac.ir/article_2050.html L1 - https://jdmt.mums.ac.ir/article_2050_dc9afa4b624d0a4f109bfab51d836a3c.pdf ER -