| 摘要 |
PURPOSE:To obtain a calcium phosphate type ceramics body having practical strength and enhanced in biological activity by providing a rough surface layer with specific thickness having unevenness based on hydroxyapatite and/or beta- tricalcium phosphate to the surface of a calcium phosphate type ceramics dense body. CONSTITUTION:A coating layer composed of calcium phosphate ceramics containing hydroxyapatite and phosphate forming tricalcium phosphate upon the reaction with the hydroxyapatite or phosphate-containing glass is formed on the surface of a calcium phosphate molded or sintered body and baked at 700-1350 deg.C to easily obtain a ceramics body having a surface layer excellent in biological activity. When the thickness of the surface layer thus obtained is below 10mum, sufficient uneveness permitting the tissue of a living body to penetrate can not be formed and, when the thickness exceeds 1000mum, the strength at the time of handling such as the chipping or release of a film becomes an issue and practical unevenness permitting a cell to penetrate is not formed and, therefore, the thickness is set to 10-1000mum. |
