| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an orbital dental grinding device capable of grinding a crown, a bridge or a prosthetic stuff without losing the shape of the crown. SOLUTION: In order to solve problems that a lathe or a hand piece is generally used to grind the crown at a dental mechanic, and a deeper part of the prosthetic stuff cannot be ground without totally breaking the anatomical shape therearound to fit a disk-like brush on a rotary shaft, the orbital dental grinding device comprises a brush plate 50, an electric motor 54 for giving the orbital motion to the brush plate 50, and grinding brushes 44, 46 and 48 having a working surface fitted to the brush plate 50. The anatomical shape of the crown can be excellently protected by using the brushes 44, 46 and 48 utilizing the orbital motion.</p> |
