Dental blank to be machined, metal powder for powder metallurgy, dental metal frame for porcelain bonding, and dental prosthesis

摘要

A dental blank to be machined is a workpiece for cutting out a metal frame having a shape suited to an affected part by being subjected to a dental CAD/CAM system and undergoing a machining process. The dental blank contains Co as a main component, Cr in a proportion of 26% by mass or more and 35% by mass or less, Mo in a proportion of 5% by mass or more and 12% by mass or less, and Si in a proportion of 0.5% by mass or more and 1.0% by mass or less. The dental blank is formed from a metal powder sintered body. Further, a part of the Si is contained as silicon oxide, and the ratio of Si contained as silicon oxide to the total amount of Si is preferably 10% by mass or more and 90% by mass or less.