论文部分内容阅读
目的:应用CT三维重建来探讨双侧下颌骨矢状劈开截骨术舌侧水平截骨线与骨劈开效果的关系,为下颌骨矢状劈开截骨术舌侧水平截骨位置的选择提供指导。方法:选择17例双侧下颌骨前突患者(34例),经过下颌骨矢状劈开截骨术,术后应用三维重建观测水平截骨线及劈开效果。结果:只有10.87%的劈开结果理想(符合Hunsuck描述),54.35%的劈开效果较理想,32.61%的穿过了下颌管,4.35%穿过了其它部位。劈开的效果直接受水平截骨位置的影响(P<0.01)。结论:三维CT在评价下颌骨矢状劈开截骨术效果方面是有效的工具,为下颌骨矢状劈开截骨术选择舌侧水平截骨线位置提供重要数据,并能降低不良劈开的发生率。
OBJECTIVE: To investigate the relationship between horizontal lingual osteotomy line and the cleavage effect of bilateral mandibular sagittal split osteotomy by CT three-dimensional reconstruction. To study the relationship between horizontal lingual osteotomy position of mandibular sagittal split osteotomy Choose to provide guidance. Methods: Seventeen patients with bilateral mandibular protrusion (34 cases) underwent mandibular sagittal split osteotomy. Three-dimensional reconstruction was used to observe horizontal osteotomy and cleavage. Results: Only 10.87% of the cleavage results were satisfactory (Hunsuck description), 54.35% cleaved better, 32.61% passed through the mandibular canal and 4.35% passed through other sites. The effect of cleavage was directly affected by the level of osteotomy (P <0.01). Conclusion: Three-dimensional CT is an effective tool for evaluating the effect of sagittal split osteotomy in mandible. It provides important data for the selection of horizontal lingual osteotomy line in sagittal split osteotomy of mandible, The incidence of.