目的分析下颌全口义齿软衬前后的义齿基托组织面位移情况，研究其对义齿稳定性的影响。
Objective To study the stability of mandibular complete denture with soft denture liner by means of investigating the displacement of tissue surface of the base plate.
使用SEM电镜，对两种材质的衬板及一种材质的叶浆头的磨损面进行了观察分析。
Using SEM, the abraded surface of two kinds of liner plates and one paddle have been investigated.
结果有软衬基托组织面位移大于无软衬时义齿组织面位移（P<0.01）；
Results The displacement of the tissue surface of base plate with soft denture liner was significantly larger than that of without soft tissue liner (P<0.01).
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