Retention gear pump, motor and foot screws, screw the force should be uniform, reliable connection.
紧固齿轮泵、电动机的地脚螺钉时,螺钉受力应均匀,连接可靠。
Objective: to study on retention force of dentures with various amount and distribution of attachments, provided reference to clinic use.
目的:对不同数量及分布的钉帽附着体固位力进行测试,为临床应用提供参考依据。
Retention force of 10 teeth are measured by using biomechanical method.
通过生物力学的方法测定10颗离体牙充填物的抗拉力强度。
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