| 摘要 |
PCT No. PCT/SE82/00277 Sec. 371 Date Apr. 19, 1983 Sec. 102(e) Date Apr. 19, 1983 PCT Filed Sep. 9, 1982 PCT Pub. No. WO83/00824 PCT Pub. Date Mar. 17, 1983.A dental implement for abrasion, comprising a steel spatula coated on its opposite broad surfaces with an abrasive coating of tungsten applied to the steel surfaces with the aid of an electric arc. The implement is particularly useful for dentistry, because the tungsten has very little effect on the relatively hard tooth enamel but is quite abrasive on such dental materials as gold, amalgam, and dentine. Thus the implement is especially suited to smoothing tooth fillings of various types where the tooth enamel is to be left intact but the foreign material is to be evened out to make as smooth a transition as possible to the surrounding tooth enamel. |
