我们利用废旧的双色圆珠笔芯管,经改制可代替某些国产损坏的涡轮牙钻夹具。经一年多的临床试用,获得较满意的效果。其方法如下: 拆除原机头内的三个夹簧片,取双色圆珠笔塑料 We use the waste of two-color ballpoint pen core tube, the restructuring can replace some of the domestic damaged turbine dental fixture. After more than a year of clinical trial, get more satisfactory results. The method is as follows: Remove the original head of the three clip reed, take two-color ballpoint pen plastic