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[The morphological study on masseter muscle following mandibular angle osteotomy].
Zhonghua Zheng Xing Wai Ke Za Zhi
September 2010
Department of Plastic and Constructive, Ninth Hospital affiliated to Medical School of Shanghai Jiaotong University, Shanghai 200011, China.
Objective: To evaluate the morphological change of masseter after the mandibular angle osteotomy.
Methods: Computerized tomography (CT) examination was performed on 120 patients treated by mandibular angle osteotomy before operation and at 3, 6, 12 months after operation, respectively. The pre- and postoperative masseter muscle thickness and cross-sectional area were evaluated using 3D CT images observed from 3 selected slice planes, which were paralleled with Frankfurt horizontal plane.