【摘要】 作者采用有限元法对套筒冠、近中合支托、远中合支托固位体可摘局部义齿修复牙列末端游离缺损后支持组织应力分布进行测试，结果显示：套筒冠固位体义齿比其它两种因位体义齿在受力时，基牙及基托下支持组织的应力分布均匀，不会对口腔软硬组织产生创伤。因此牙列末端游离缺损采用该方法能取得较好修复效果。更多还原

【Abstract】 Finite element method was used in the present study, of stress distribution of supporting tissuesunderlying extension edentulism which were restored with RPD using telescopic crown. mesial anddistal occlusal rest respectively as retainers were tested by means of finite element. Results showedthat the stress of both abutment and underlying supporting tissues of telescopic crown retaineddemure were more evenly distributed than that of the other two types, and it produces no trauma tooral hard and soft tissues, thus proved to be a sound way of restoring extension edentulism.更多还原