下顎辺縁切除術による骨欠損に対し筋突起を粉砕して骨移植を行った1例

• Published in: 日本口腔外科学会雑誌 Vol. 59; no. 8; pp. 546 - 549
• Main Authors: 木村, 俊介, 足立, 守安, 小熊, 哲史, 中野, 雅哉, 片山, 良子
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本口腔外科学会 20.08.2013
• Subjects: 下顎辺縁切除術; 筋突起; 骨移植
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.59.546

Depending on the residual bone height after marginal mandibulectomy, fracture may occur postoperatively. We report a bone graft technique using the coronoid process for marginal mandibulectomy. In the patient, the coronoid process of the affected side was crushed, and a bone graft was placed in the jaw defect. A 62-year-old woman with gingival cancer of the right mandibular molar region (T2N1M0) underwent marginal mandibulectomy including the mandibular canal and functional neck dissection on the affected side. The coronoid process was resected with the tumor, and a bone graft was harvested with bone-cutting forceps from a site at least 10 mm from the soft-tissue resection margin and the mandibular foramen. Immediately after marginal mandibulectomy, the vertical dimension of the mandible at the thinnest portion was 7 mm, but improved to 15 mm after surgery.