| 摘要 |
A palladium-dominated dental alloy, in particular a ceramic-bonding dental alloy for the manufacture of dental prostheses such as crowns, bridges, inlays, or onlays, containing at least gold, palladium, and silver, as well as a grain-growth inhibitor in the form of ruthenium. In order to achieve a fine-grained separation without the formation of agglomerates to obtain a dental alloy with high mechanical stability and excellent polishing characteristics, it is proposed that the dental alloy contain—in addition to ruthenium as grain-growth inhibitor—at least one element of the group tantalum, niobium, yttrium, zirconium, chromium, and molybdenum as grain-refinement control element. |
| 主权项 |
1. A palladium-dominated dental alloy, in particular a ceramic-bonding dental alloy for the manufacture of dental prostheses such as crowns, bridges, inlays, or onlays, consisting essentially of at least gold, palladium, and silver, as well as one grain-growth inhibitor in the form of ruthenium, wherein in addition to ruthenium as grain-growth inhibitor, the dental alloy contains at least one element selected from the group consisting of tantalum, niobium, yttrium, zirconium, chromium, and molybdenum as grain-refinement control element, whereby the dental alloy consists essentially of (in % by weight):0.03 to 1 ruthenium0.03 to 2 grain-refinement control element 0 to 10tin 0 to 10zinc 0 to 10indium 0 to 10copper0 to 1gallium 0 to 10platinum0 to 2iridium0 to 2rhodium0 to 2germanium0 to 2aluminium0 to 2silicon0 to 2cerium0 to 2lanthanum0 to 2iron, with the remainder being gold, palladium, and silver, whereby the total sum of elements adds up to 100% by weight. |
