Objective: To quantitatively study the different retentive force of bar-clipattachment 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。
2
The clipattachment and the fittings may first carry on the installment, and can adjust the random orientation, the angle.
卡箍接头及配件可先进行安装，并可调整任意方向、角度。
3
Conclusion: the number, site and dislocation direction of the attachment affect retention force of bar-clip implant overdenture.