“retention force”簡單造句，retention force造句子

Objective: to study on retention force of dentures with various amount and distribution of attachments, provided reference to clinic use.

Objective The friction coefficient between the clasp and enamel was measured as one base of calculating the retention force of clasp quantitatively.

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

The effect of different luting cements on casting metal full crown retention force