Ueki Koichiro, Marukawa Kohei, Shimada Mayumi, Nakagawa Kiyomasa, Yamamoto Etsuhide
Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, 13-1 Takaramachi, Kanazawa 920-8641, Japan.
J Oral Maxillofac Surg. 2005 Oct;63(10):1494-9. doi: 10.1016/j.joms.2005.06.013.
The purpose of this study was to compare postsurgical time course changes in condylar long axis and skeletal stability between sagittal split ramus osteotomy (SSRO) and intraoral vertical ramus osteotomy (IVRO).
Of 40 Japanese patients with a diagnosed jaw deformity, 20 underwent IVRO without internal fixation and 20 underwent SSRO with rigid internal fixation. The time course change in condylar long axis and skeletal stability were assessed with axial, frontal, and lateral cephalograms.
A significant difference in the rotation direction of condylar long axis was seen in horizontal axial cephalogram images (P <.01). In Pog-N perpendicular to SN, the IVRO group showed gradual decrease, although SSRO group showed gradual increase in lateral cephalogram (P <.05).
The present results suggest a significant difference between SSRO and IVRO in time course changes in proximal segment including condyle and distal segment.
本研究旨在比较下颌升支矢状劈开截骨术（SSRO）和口内垂直升支截骨术（IVRO）术后髁突长轴和骨骼稳定性的时间进程变化。
40例诊断为颌骨畸形的日本患者中，20例接受了无内固定的IVRO，20例接受了坚固内固定的SSRO。通过轴向、正位和侧位头影测量片评估髁突长轴和骨骼稳定性的时间进程变化。
在水平轴向头影测量图像中，髁突长轴的旋转方向存在显著差异（P<.01）。在垂直于SN的Pog-N处，IVRO组在侧位头影测量片中显示逐渐下降，而SSRO组显示逐渐增加（P<.05）。
目前的结果表明，SSRO和IVRO在包括髁突的近端节段和远端节段的时间进程变化方面存在显著差异。
Zotero 插件