| 摘要 |
The crown comprises an outer crown (2) mechanically or chemically bonded onto a metal inner crown (1) formed by electroplating. The outer crown (2) is of porcelain, plastics, or a metal. The outer crown may be bonded to a cast crown formed on the inner crown by the lost-wax casting process or to a metal-plastics combination crown obtained by building up plastics on the inner crown by the brush-on technique and curing it. <IMAGE> |
