Provided is a dental prosthesis component which is a member to configure a dental prosthesis provided with an artificial tooth root, which have high strength and a good esthetic property. The dental prosthesis component (12),(13) to configure a dental prosthesis (10) provided with an artificial tooth root (12), which are made of Zr-14Nb alloy, wherein a surface layer containing ZrO2 and having a thickness of less than 80 μm as a main ingredient is formed on the components, and the surface has a brightness of Gly 8.0 or more of the color sheets according to Practical Color Co-ordinate System 201.
