| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a prosthesis installation dowel comprising metal for a double-structure dental implant having a cross sectional form in an oral cavity zone to be similar to a form of a natural tooth. SOLUTION: A part 1 of an installation dowel is formed as a conical body, a section 3 developed upward and formed as a hyperboloid of revolution is continuously formed with it, the section 3 transfers to a partial paraboloid of revolution in a section 4, the section 4 has a form of a conical base 5 on the biting side, the conical base 5 has a semi-oval bottom surface on the lip side, and a paraboloid-shaped bottom surface on the tongue side as seen as a cross sectional surface, a transfer part between the conical base 5 and the partial paraboloid of revolution 4 is positioned to a gum penetrating zone of the installation dowel, and formed as a shoulder having a uniform width of 0.1-1.5mm, and the conical base 5 is tapered upward at an angle of 1-15 deg..</p> |
