Barkmeier W W, Frost D E, Cooley R L
J Am Dent Assoc. 1978 Jul;97(1):51-3. doi: 10.14219/jada.archive.1978.0462.
An in vitro study has shown that the TMS minim two-in-one, self-shearing pin reaches maximum depth in a 2-mm pin channel before shearing off with insertion by a hand-turned wrench. The self-shearing, two-in-one pin did not achieve the full channel depth of 2 mm with insertion by an Auto Klutch handpiece.
一项体外研究表明，TMS最小型二合一自剪切销在用手动扳手插入时，在2毫米的销通道中达到最大深度后会剪切脱落。使用自动离合机头插入时，这种自剪切二合一销未达到2毫米的完整通道深度。
