conclusiontri auto zx root canal apex locator is not a reliable tool for detection of the working length of root canal in the aged with lesion on root tip.
结论根管测量仪不能作为确定老年人有根尖病变根管工作长度的最终手段。
conclusion: the method of root canal length measured with tri auto zx root canal apex locator is one kind of accurate and impersonal one.