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タイトル: The effects of changing position and angle of the proximal segment after intraoral vertical ramus osteotomy
著者: Ueki, Koichiro
Hashiba, Yukari
Marukawa, Kohei link image link image
Nakagawa, Kiyomasa
Alam, Shamiul
Okabe, Katsuhiko
Yamamoto, Etsuhide
上木, 耕一郎
羽柴, 由香里
丸川, 浩平
中川, 清昌
岡部, 克彦
山本, 悦秀
発行日: 2009年10月
出版社(者): Elsevier / International Association of Oral and Maxillofacial Surgeons
雑誌名: International Journal of Oral and Maxillofacial Surgery
ISSN: 0901-5027
巻: 38
号: 10
開始ページ: 1041
終了ページ: 1047
キーワード: hypoesthesia
ntra-oral vertical ramus osteotomy
proximal segment
temporomandibular joint
抄録: The authors evaluated changes in position and angle of the proximal segment, including the condyle, after intraoral vertical ramus osteotomy (IVRO) with and without a Le Fort I osteotomy to verify whether displacement of the proximal segment could induce postoperative complications. Changes in condylar angle, ramus angle, and displacement of proximal segment were measured pre- and postoperatively. The position of the temporomandibular joint (TMJ) disc was examined pre- and postoperatively. Trigeminal nerve hypoesthesia in the lower lip was assessed bilaterally. The postoperative horizontal condylar angle was significantly smaller than the preoperative one on the deviated and non-deviated sides (P<0.0001). The postoperative coronal condylar angle was significantly larger than the preoperative one on the deviated side (P=0.0483). The postoperative sagittal ramus angle was larger than the preoperative one on the deviated (P<0.0001) and non-deviated (P=0.00005) side. Most joints with an anteriorly-displaced disc with and without reduction improved on the non-deviated side; 5 of 16 joints improved on the deviated side. Results suggest the position and angle of the proximal segment, including the condyle, could change after IVRO. This could be associated with symptomatic improvement in TMJ, and extreme medial displacement of the proximal segment could delay recovery from lower lip hypoesthesia. © 2009 International Association of Oral and Maxillofacial Surgeons.
DOI: 10.1016/j.ijom.2009.04.021
URI: http://hdl.handle.net/2297/19611
関連URI: http://www.elsevier.com/locate/issn/09015027
資料種別: Journal Article
版表示: author
出現コレクション:1. 査読済論文(医学・保健)

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