大鼠正畸牙齿移动过程中牙周组织超微结构的改变  

The ultrastructural changes of periodontal tissues during orthodontic tooth movement in rats

作　　者：杨美祥[1] 丁寅[1] 邹邦新[1] 金作林[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032

出　　处：《牙体牙髓牙周病学杂志》2002年第10期535-536,共2页Chinese Journal of Conservative Dentistry

摘　　要：目的:研究正畸牙齿移动过程中牙周组织超微结构的改变情况。方法:施加外力使大鼠上颌第一磨牙向近中移动后,处死大鼠制备第一磨牙标本,进行透射电镜观察。结果:大鼠受正畸力作用后,组织各种生理、病理反应更加明显,压力侧破骨细胞增多,线粒体、溶酶体增多,高尔基体发达,成纤维细胞排列紊乱、变性、萎缩甚至坏死。张力侧成骨细胞、成纤维细胞的胞浆内高尔基体、内质网丰富,分泌功能旺盛。结论:正畸力引起牙周组织细胞功能的旺盛,改建活跃。AIM: To study the periodontic response of ultrastructure during orthodontic tooth movement.METHODS; This experiment was designed and completed by using of female rats under transmission electron microscope. RESULTS:The periodontium of rats was more easy to response to orthodontic forces, and the functions of osteo-clasts, osteoblasts and fibroblasts was more active. CONCLUSIONS:The forces may promote the remodeling of perio-dontal tissues, including bone formation on the tension side and resorption on the pressure side.

关 键 词：透射电镜 正畸牙齿移动 牙周组织 超微结构 大鼠 

分 类 号：R783.5[医药卫生—口腔医学]