Yuan Jie, Zhu Qin Qin, Zhang Ying, Qi Zuo Liang, Wei Min
Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
J Craniofac Surg. 2013 Jul;24(4):1111-3. doi: 10.1097/SCS.0b013e31828f2449.
The mandibular angle plays an important role in determining the Asian human facial attractiveness. Currently, mandibular angle osteotomy is often reported as the correction of square face appearance due to its prominence. However, no previous study has documented the long-term outcome of partial masseter muscle resection along with reduction of mandibular angle.
Our study aims to investigate the outcome and complications of partial masseter muscle resection along with reduction of mandibular angle in long-term follow-up.
One hundred fifty-one patients were subjected to the computed tomography scan before and 3 years after surgery. Morphometrical analysis was conducted on all parameters for clinical evaluation, so as to reveal the change of masseter muscle, the postsurgical result, and the complication.
All patients were satisfied with the optimal outcome of the reduction of mandibular angle and masseter muscle. Morphometrical analysis indicated that the volume of masseter muscle changed statistically significantly before and after surgery (reduced 21.31 ± 7.64% on left, 20.77 ± 7.45% on right). Complications included swelling and low lip numbness, yet no patients reported infection or facial nerve injury.
Partial masseter muscle resection along with reduction of mandibular angle can improve the appearance of the patients greatly, and only a few complications occurred.
下颌角在决定亚洲人的面部吸引力方面起着重要作用。目前，下颌角截骨术常被报道用于矫正因下颌角突出导致的方形脸外观。然而，此前尚无研究记录下颌角缩小术联合部分咬肌切除术的长期效果。
我们的研究旨在通过长期随访调查下颌角缩小术联合部分咬肌切除术的效果及并发症。
151例患者在手术前及术后3年接受了计算机断层扫描。对所有参数进行形态学分析以进行临床评估，从而揭示咬肌的变化、手术结果及并发症。
所有患者对下颌角和咬肌缩小的最佳效果均感到满意。形态学分析表明，手术前后咬肌体积有显著统计学变化（左侧减少21.31±7.64%，右侧减少20.77±7.45%）。并发症包括肿胀和下唇麻木，但无患者报告感染或面神经损伤。
下颌角缩小术联合部分咬肌切除术可显著改善患者外观，且仅出现少数并发症。
