Yoshiga Daigo, Mitsugi Sho, Otani Taishi, Tsurushima Hiroki, Sakaguchi Osamu, Habu Manabu, Yoshioka Izumi
Department of Science of Physical Functions, Division of Oral Medicine, Kyushu Dental University, Kitakyushu, JPN.
Second Department of Oral and Maxillofacial Surgery, Osaka Dental University, Osaka, JPN.
Cureus. 2024 Dec 2;16(12):e74994. doi: 10.7759/cureus.74994. eCollection 2024 Dec.
Objective Masticatory muscle tendon-aponeurosis hyperplasia (MMTAH) is a recently identified condition characterized by restricted mouth opening due to hyperplasia of the temporalis muscle tendon and masseter muscle aponeurosis. This study examines the treatment and clinical course of patients with MMTAH who underwent surgery at our hospital. Subjects and methods The study included 14 patients (four males and 10 females; mean age: 33.9 years; age range: 17-50 years) who were clinically diagnosed with MMTAH at our hospital between 2008 and 2020. The surgical procedure, as well as the preoperative, intraoperative, and postoperative mouth opening range of each patient, were examined. Results In all cases, the mouth opening range significantly improved postoperatively. Patients who underwent mandibular anglectomy showed a significantly greater mouth opening range both preoperatively and postoperatively compared to those who did not undergo the procedure. Additionally, mandibular anglectomy was effective in maintaining the mouth opening range at six months in patients who underwent the procedure, in contrast to those who did not. Conclusions Mandibular anglectomy appears to be effective in maintaining the mouth opening range in patients with MMTAH. While additional case studies are needed to confirm our findings, we believe that mandibular anglectomy is a valuable treatment option for MMTAH.
目的 咀嚼肌肌腱 - 腱膜增生（MMTAH）是一种最近发现的病症，其特征是由于颞肌肌腱和咬肌腱膜增生导致张口受限。本研究探讨在我院接受手术治疗的MMTAH患者的治疗方法及临床病程。对象与方法 本研究纳入了2008年至2020年间在我院临床诊断为MMTAH的14例患者（4例男性，10例女性；平均年龄：33.9岁；年龄范围：17 - 50岁）。检查了每位患者的手术过程以及术前、术中和术后的张口度。结果 所有病例术后张口度均显著改善。与未行下颌角切除术的患者相比，行下颌角切除术的患者术前和术后的张口度均显著更大。此外，与未行该手术的患者相比，行下颌角切除术的患者在术后6个月时能有效维持张口度。结论 下颌角切除术似乎对维持MMTAH患者的张口度有效。虽然需要更多病例研究来证实我们的发现，但我们认为下颌角切除术是MMTAH一种有价值的治疗选择。
