| 摘要 |
<p>PURPOSE:To efficiently work a planting groove fitted with the contour of the blade of an artificial tooth root for a jaw bone by forming the planting groove, turning a cutter plate having a number of cutters on the outer peripheral part of a sector having the nearly equal curvature to the arc of the planting part for the artificial tooth root, in reciprocation within a minute angular range, around a shaft perpendicular to the groove direction. CONSTITUTION:As for a cutter plate 3, two cutter plates 3a and 3b having a number of cutters 3a', 3a' formed at equal intervals at the top edge having the nearly same shape to that of the top edge of a blade 1 are integrally fixed in parallel each other, and the cutter plates 3a and 3b are vertically installed on an installation shaft 4. When a planting groove is worked by the cutter plate 3, the installation shaft 4 is turned in reciprocation in a minute angular range, and the cutter plate 3 is vibrated in reciprocation in a minute angular range as shown by the arrow A. In the groove working, cutting is performed by the cutter plate 3 from a tooth socket for a jaw bone P on which a tooth stem is cutting-opened, and cutting work is performed to the depth permitting the embedding of the blades 1 and 1' of an artificial tooth root. Accordingly, the artificial tooth can be fixed in the favorably fitted state by inserting and planting the blades 1 and 1'.</p> |
