| 摘要 |
PROBLEM TO BE SOLVED: To provide a calcium phosphate organism prosthetic material having high mechanical strength, ensuring cost effectiveness and safety, and having the capability of maintaining enough bone conduction. SOLUTION: This prosthetic material is formed out of a sintered material having a bare sintered surface substantially made of only calcium tertiary phosphate and hydroxy apatite. Furthermore, the content ratio and mean crystal grain size of the calcium tertiory phosphate for the total content of the calcium tertiary phosphate and hydroxy apatite are between 1wt.% and 10wt.%, and 0.05μm and 5.0μm respectively. In addition, the content ratio and mean crystal grain size of the calcium tertiary phosphate at 50μm depth from the bare sintered surface are both between 50% and 100% relative thereto. |
