| 摘要 |
A tooth model fixing pin having a screw thread is provided to facilitate insertion or separation of the tooth model and to allow maintenance of its combining force in spite of repeated fixation and removal of the tooth model on the base member. A tooth model fixing pin(100) having a screw thread comprises: a base insertion part(110) with a hexagonal section by a projected central line(114), which tapers off from the upper part to the lower part; and a tooth model fixing part(120) having a screw thread on its periphery.
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