Patent ID: 7892480

Claim:
A process for forming a dental prosthesis comprising the steps of: (i) providing a metallic alloy comprising principally gold with additions of at least one additional metal selected from the group consisting of: from 1 to 5% by weight of titanium, zirconium or a combination thereof, from 0.25 to 2% by weight yttrium, and from 1 to 10% by weight chromium; and a grain refiner that oxidizes more readily than gold provided that the grain refiner is not a platinum group metal; and (ii) forming a dental prosthesis from said metallic alloy, wherein said forming step comprises at least one process selected from the group consisting of machining a dental prosthesis from an alloy body formed from said metallic alloy, and forming a dental prosthesis directly by energy beam sintering of a powder formed from the metallic alloy.