Yoda Tetsuya
Department of Maxillofacial Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
J Korean Assoc Oral Maxillofac Surg. 2019 Aug;45(4):174-179. doi: 10.5125/jkaoms.2019.45.4.174. Epub 2019 Aug 28.
Patients with masticatory muscle tendon-aponeurosis hyperplasia (MMTAH) experience limited mouth opening due to restricted muscle extension. Hyperplastic aponeurosis and tendons lead to the restriction of muscle extension. The criteria for the diagnosis of MMTAH are limited mouth opening that progresses very slowly from adolescence, intraoral palpation reveals a hard cord-like structure along the overhang of the anterior border of the masseter muscle on maximum mouth opening, and a square mandible. Conservative treatment, including pharmacotherapy, occlusal splint and physical therapy are ineffective. The standard therapy is surgical treatment, such as anterior partial aponeurectomy of the masseter muscle and coronoidectomy. The long-term results are very satisfying.
咀嚼肌肌腱-腱膜增生症（MMTAH）患者由于肌肉伸展受限而出现张口受限。腱膜和肌腱增生导致肌肉伸展受限。MMTAH的诊断标准为：自青春期起张口受限进展非常缓慢，口腔内触诊发现在最大张口时沿咬肌前缘悬垂处有坚硬的条索状结构，以及方形下颌骨。包括药物治疗、咬合板和物理治疗在内的保守治疗均无效。标准治疗方法是手术治疗，如咬肌前部部分腱膜切除术和冠突切除术。长期效果非常令人满意。
