种植体杆卡式附着体固位的覆盖义齿固位特性的定量研究

The quantitative study for the retentive character of complete overdenture retained with implants barclip attachment

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 study the different retentive force of barclip attachment supporting overdenture with different number and site of retentive nylonclip. Methods: The prosthestic retentive force tester was used to test the retentive force of barclip attachment supporting overdenture with different nylonclip number and site when the dislocation angle was 90or 60. The data were statistically analysed. Results:Z Retentive forces between designed groups were significantly difference due to different number of nylonclip, different site of the clips and the dislocation angle when the retentive points were in line. Conclusion: The number,site and dislocation direction of the attachment affect retention force of bar-clip implant overdenture.