| 摘要 |
1. Dental alloys, characterized in that they contain : Silver 20 at least (basic metall) Palladium 7.5 to 40% Platinum 8 to 20% Gold 7.5 to 30% and from 2 to 10% at least of a metal selected from zinc, copper, and M, M being ruthenium, iridium and rhodium, on the understanding that : - the maximal quantities of zinc, copper and M are respectively 5%, 8% and 2%, - the alloys contain no indium, tin and less than 0.05% of allergen metals such as iron, cobalt, nickel, chromium, manganese. |
