METHODS: Based on the 3-D FEA database of RPD, the stress state of the abutment and its periodontal tissue was analyzed to choose the optimal retainer with the same situation of dentural defect.
METHODS: Based on the 3-D FEA database of RPD, the stress state of the abutment and its periodontal tissue was analyzed to choose the optimal retainer with the same situation of dentural defect.
方法：对个别牙缺失的病例设计不同固位体，在可摘局部义齿三维有限元模型库的基础上组建实验模型，通过三维有限元方法，分析牙周组织在不同情况下所受的应力大小。