Evaluation of retentive force of wire clasp made a low Young's modulus β-type Ti-6Mo-4Sn alloy

采用压电传感器对低杨氏模量β型Ti-6Mo-4Sn合金（β-Ti-alloy）金属卡环的固位力进行了测定。β-钛合金丝与钴-铬合金丝的固位力差异不显著，而钴-铬合金丝的固位力差异不显著。β-钛合金丝适用于有大量凹痕的基牙。

The retentive force of wire clasp made of a low Young's modulus β-type Ti-6Mo-4Sn alloy (β-Ti-alloy) was evaluated using a piezoelectric transduce. There were no significant differences between the retentive force of a β-Ti-alloy wire with a 0.50 mm undercut and that of a cobalt-chrome alloy (Co-Cr-alloy) wire with a 0.25 mm undercut. The β-Ti-alloy wire could be applicable for abutment teeth with large amount of undercuts.