This paper applied 3-D photoelastic stress analysis method,studied the stress distribution on bone of mandibular bilateral-distal-extension removalbe partial dentures which retained by Thompson Dowel Semi precision attachment and RPI Assembly.

• 用三维光弹性应力分析方法，对Thompson半精密附着体固位与RPI卡环固位下颌双侧游离端可摘局部义齿在牙槽骨内的应力分布进行了研究。