開口障害の原因として咀嚼筋腱・腱膜過形成症が疑われた1例

概要

論文の詳細を見る
A 19-year-old woman was referred to our clinic because of her limited mouth opening. Her face was symmetric, but the bilateral mandibular angles were so prominent that the configuration of her jaw was square-like. Clinical examination revealed that the interincisal distance was 21mm without pain at the temporomandibular joints. The masseter muscles appeared to be hypertrophic, and the anterior border of them were firm and thick because of intraoral palpation. The panoramic radiographic and CT examinations showed that the bilateral coronoid processes as well as mandibular angles were enlarged. On 3D-CT images, the motility of the coronoid processes was suspected to be interfered with the zygomatic bones at the mouth opening. The clinical diagnosis was a restricted mouth opening resulting from the bilateral hyperplasia of the coronoid processes and masseter muscles hypertrophy associated with hyperplasia of mandibular angles. Bilateral coronoidectomy and masseter muscle stripping were performed by the intraoral approach, followed by mandibular anglectomy undertaken etraorally. The mouth opening was 38mm after coronoidectomy, and was further improved to 50mm after masseter muscle stripping and mandibular anglectomy. Two years later, the mouth opening was 45mm without any symptoms. Because of firm and hypertrophic masseter muscles and square mandible, the present case may be regarded as "hyperplasia of the tendon and aponeurosis of masticatory muscles" which has been recently advocated for as a distinct disorder.
福岡歯科大学学会の論文
2009-03-31

開口障害の原因として咀嚼筋腱・腱膜過形成症が疑われた1例

スポンサーリンク

概要

著者

関連論文

スポンサーリンク