コガ　ヨウコ   Yoko Kawase-Koga   古賀　陽子    所属   医学部 医学科（東京女子医科大学病院）    職種   教授・基幹分野長
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Complications after intraoral vertical ramus osteotomy: relationship to the shape of the osteotomy line.
掲載誌名	正式名：International journal of oral and maxillofacial surgery 略　 称：Int J Oral Maxillofac Surg ISSNコード：13990020/09015027
掲載区分	国外
巻・号・頁	45(2),pp.200-4
著者・共著者	Kawase-Koga Y, Mori Y, Fujii Y, Kanno Y, Chikazu D, Susami T, Takato T
発行年月	2016/02
概要	Intraoral vertical ramus osteotomy (IVRO) is used widely to correct mandibular prognathism. However, several disadvantages of this procedure have been reported, such as condylar luxation and bony interference at the osteotomy site. The aim of this study was to survey the incidence of complications (condylar luxation and bony interference) based on the shape of the osteotomy line. One hundred and eighty-five rami in 118 patients with jaw deformities, which were treated with IVRO, were examined retrospectively. The shape of the osteotomy line and the postoperative complications were examined on panoramic radiographs. Osteotomy lines were classified into three types: vertical, C-shaped, and oblique. Of the 185 osteotomy sites, 98 were vertical, 37 C-shaped, and 50 oblique. Condylar luxation was found in six rami (3.2%); four had undergone vertical osteotomy and two had undergone C-shaped osteotomy. Bony interference occurred in seven rami (3.8%), all with vertical type osteotomy lines. Most complications occurred in the vertical type cases and no complications were found in oblique type cases. Condylar luxation was found mainly in unilateral IVRO cases and bony interference was found in bilateral IVRO cases. These results suggest that the oblique type of osteotomy line has the advantage of avoiding complications.
DOI	10.1016/j.ijom.2015.07.008
PMID	26421477