Dental alloy

Details Dental alloy Dental alloy

A - Human Necessities

61

K

A61K 6/04 (2006.01) A61C 13/00 (2006.01) C22C 30/00 (2006.01)

Patent

CA 2735463

The invention relates to 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 be able 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 comprising tantalum, niobium, yttrium, zirconium, chromium, molybdenum as grain-refinement control element, whereby the dental alloy consists of (in % by weight): 0.03 to 1 ruthenium 0.03 to 2 grain-refinement control element 0 to 10 tin 0 to 10 zinc 0 to 10 indium 0 to 10 copper 0 to 1 gallium 0 to 10 platinum 0 to 2 iridium 0 to 2 rhodium 0 to 2 germanium 0 to 2 aluminium 0 to 2 silicon 0 to 2 cerium 0 to 2 lanthanum 0 to 2 iron, with the remainder being gold, palladium, and silver, whereby the sum of elements adds up to 100% by weight.

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