Objective: To quantitatively study the different retentive force of bar-clip attachment supporting overdenture with different number and site of retentive nylon-clip.

〔摘要〕 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。

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Conclusion: the number, site and dislocation direction of the attachment affect retention force of bar-clip implant overdenture.

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。

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