套筒冠义齿固位体修复的设计和选择-国际口腔医学杂志.PDF

国际口腔医学杂志第38 卷6 期2011 年11 月 · · 621 ·专家论坛· 套筒冠义齿固位体修复的设计和选择 刘长虹 （广东省口腔医院·南方医科大学附属口腔医院修复科 广州 510280 ） [摘要] 套筒冠作为一种灵活便利的固位体，常用于牙周病及其牙列缺损的修复、咬合重建修复、多数牙缺失 的牙列缺损修复、先天性牙列缺损的修复或与其他固位体联合应用等方面。套筒冠与牙连成整体，固位力良好， 既可以压力沿基牙长轴传递，承担较普通活动义齿更大的咀嚼压力，产生更高的咀嚼效率；也能对牙周病引起 的松动牙起牙周夹板的治疗作用。套筒冠口内戴用的满意度和长期成功率已经得到证实，但也存在外冠固位力 降低，基牙 创伤松动脱落等问题。本文就套筒冠固位体的内冠角度、缓冲、内冠高度、材料性能、制作流程  及方法、套筒冠附着体等进行诠释，以期为套筒冠固位体的设计和选择提供一些参考。 [关键词] 套筒冠；牙列缺损；牙周病；固位力；缓冲；固位体设计 [中图分类号] R 783.3 [文献标志码] A [doi] 10.3969/j.issn.1673-5749.2011.06.001 Repair design of telescopic crown denture retainers Liu Changhong. （Dept. of Prosthodontics, Guangdong Provincial Stomatological Hospital, The Affiliated Stomatological Hospital of Southern Medical University, Guangzhou 510280, China） [Abstract] Telescopic crown is a flexible and convenient retention mode which is widely applied in patients with periodontal disease, as well as in occlusal reconstruction, restoration of dentition defect with most tooth missed, and congenital dentition defect. Telescopic crowns are also used as retainers or combined application with other retainers. Telescopic crowns can transfer the pressure along the long axis of the abutment teeth and connect the abutments into a whole. As a consequence it leads to a good retention forces, better standing for greater mastica－ tory pressure and higher masticatory efficiency than ordinary removable denture. At the same time it can be used as periodontal splint for loosen teeth involved in periodontal disease. At present, the satisfaction and long-term success rates