J Korean Assoc Oral Maxillofac Surg 2017; 43(1): 46~48
The postoperative trismus, nerve injury and secondary angle formation after partial masseter muscle resection combined with mandibular angle reduction: a case report
Jeong-Hwan Kim1,2, Seong-Un Lim1, Ki-Su Jin1, Ho Lee1,2, Yoon-Sic Han1,2
1Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center, 2Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Korea
Yoon-Sic Han
Department of Oral and Maxillofacial Surgery, Section of Dentistry, SMG-SNU Boramae Medical Center, 20 Boramae-ro 5-gil, Dongjak-gu, Seoul 07061, Korea
TEL: +82-2-870-2495   FAX: +82-2-831-0714
E-mail: hanomfs@gmail.com
ORCID: http://orcid.org/0000-0001-8060-5330
Received October 27, 2016; Revised December 14, 2016; Accepted December 25, 2016.; Published online February 28, 2017.
© Korean Association of Oral and Maxillofacial Surgeons. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
A patient, who underwent partial masseter muscle resection and mandibular angle reduction at a plastic surgery clinic, visited this hospital with major complaints of trismus and dysesthesia. A secondary angle formation due to a wrong surgical method was observed via clinical and radiological examinations, and the patient complained of trismus due to the postoperative scars and muscular atrophy caused by the masseter muscle resection. The need for a masseter muscle resection in square jaw patients must be approached with caution. In addition, surgical techniques must be carefully selected in order to prevent complications, and obtain effective and satisfactory surgery results.
Keywords: Masseter muscle resection, Mandibular angle reduction, Trismus, Nerve damage, Secondary angle


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