摘要
目的 研究下颌管在下颌骨内的走行和位置关系 ,为下颌升支矢状劈开截骨手术提供指导。方法选用 30具完整的干燥下颌骨标本 ,分别在第二磨牙远中的垂直线 ,磨牙后三角尖至下颌角连线及下颌孔下 3mm呈冠状锯开下颌骨 ,观察测量下颌管的解剖位置。结果 下颌管是下颌骨的骨松质内较薄的骨密质骨管。下颌管在下颌第二磨牙后缘切面的位置靠内侧型占 87% ,中间型占 13% ;在连线切面的位置内侧型占 92 % ,中间型占8% ;在下颌孔下 3mm平面内侧型占 98% ,外侧型占 2 %。越接近下颌孔 ,颊侧骨皮质越厚。结论 了解下颌管在下颌骨内的位置及比邻关系 。
Objective To study the route and position of mandibular tube.Methods Thirty dry mandibular bones were collected to analyse.The mandibule sawed along a vertical line from the postior margin of the 2nd molar,and a line from the postior triangle apex of molar to mandibular angle,and mandibular canal was examined.Results Mandibular canal was formed by a thin layer of compact bone in spongy bone of mandibule.Eighty-seven percent of the tube was found to be closed the medial side of the bone,13%was in central point when the bone was sawed along the vertical line;92% was closed the medial side and 8% was in central point when the bone was sawed along the conective line;98% was closed the medial side and 2%was in central point when bone was sawed at 3mm under mandibular foramen.Conclusion It is important to understand the position of mandibular canal in the bone,so that the damage of the inferior alveolar nerve will be avoided.
出处
《现代口腔医学杂志》
CAS
CSCD
2003年第5期444-445,共2页
Journal of Modern Stomatology
