| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To configure a dental implant embedded into a jawbone of a defective teeth in order to prevent bones from absorbing over time after synostosis. <P>SOLUTION: The dental implant 1 is threaded with a female threaded part 1a along the long axis, and a male threaded part 1b is threaded around the periphery of the female threaded part and the mountain diameter of the perfect screw part is placed at least most inside of the oral cavity and becomes the biggest diameter, and a collar part 1c is mounted on the inside of the oral cavity of the male threaded part 1b, and the collar part 1c starts from the section including the valley diameter of the perfect screw part of the male threaded part 1b positioned at the most inside of the oral cavity, and the diameter expands to the evaginated part having almost same diameter as the mountain diameter of the perfect screw part of the male threaded part 1b and then it shrinks to the inside of the oral cavity having the almost same diameter as the valley diameter, and the surface of the male threaded part 1b and the side surface of the collar part 1c is roughened. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
