| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tap for forming a female screw of a tooth root, capable of suppressing the damage or destruction of the tooth root and stably vertically implanting and fixing a post when a male screw post for abutment construction is implanted vertically to a root canal of the tooth root of a tooth during the abutment construction in the construction of crown prosthesis structure. <P>SOLUTION: For the tap 1 for forming the female screw of the tooth root, when implanting and fixing the male screw post for the abutment construction to the root canal of the tooth root of the tooth when constructing an abutment structure or the crown prosthesis structure, since the female screw is formed in the root canal of the tooth root beforehand, the post itself is not screwed by pressing or cutting surrounding dentin or the like by a screw thread while making it directly cut into the root canal of the tooth root. Therefore, it is possible to provide the tap 1 that can form the female screw capable of suppressing weakening of the tooth root and the damage or destruction of the tooth root by that and stably implanting and fixing the male screw post for the abutment construction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
