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目的：定量评价尼龙卡设置数量及部位对杆卡式附着体固位的覆盖义齿固位力的影响。方法：采用修复体固位力测试仪，在垂直和前倾６０°的脱载方向上，对设置了不同数量和不同位置尼龙卡的覆盖全口义齿的固位力进行测定，并将结果进行统计分析。结果：各设计组间因为卡的数量不同，其固位力存在明显差异；因为卡的位置不同，各设计组内也存在差异；通过不同角度的对比测定研究，得出固位体固位点为线性结构时，其脱位力因脱位方向不同也存在明显差异。结论：种植杆卡式固位体的数量，位置及脱位力方向对种植覆盖全口义齿的固位力都有一定影响。
OBJECTIVE: To quantitatively evaluate the effect of the setting number of nylon cards and the retention force of overdenture on the rod-shaped attachment. Methods: The retention force of covered denture with different numbers and positions of nylon cards was measured by using the retentive force tester in the vertical and anteversion directions of 60 °, and the results were determined Statistical Analysis. Results: Because of the different numbers of cards, the retention forces of each design group were significantly different. Because of the different positions of the cards, there were also differences among the design groups. By contrast study of different angles, the retention points For the linear structure, the dislocation force due to dislocation in different directions there are significant differences. CONCLUSION: The number, location and dislocation force of implant bar retainer have certain influence on the retention of denture covered with complete dentures.