| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tooth root canal assembly which does not so much weaken a tooth to allow excellent fixation. <P>SOLUTION: The tooth root canal assembly comprises a core 1 fixed to a tooth root canal 11 and a post 7 to insert in the core having a pass through hole 4, wherein the core comprises a tooth crown 3 and an anchor 2 to fix to the tooth root canal with the surface of the anchor 2 shaped substantially hyperbolic, and preferably the tooth crown of the core and a part of the surface of the post also substantially hyperbolic. The hyperbolic shapes are excellent to fix and distribute a load, thereby reducing the danger for the post and the tooth root canal to break down and allowing access of the post to the tooth root canal before insertion. <P>COPYRIGHT: (C)2008,JPO&INPIT |
