| 摘要 |
PURPOSE:To obtain the fixing force stable and secure over a long period of time in a bone by forming a recessed part on at least the joint surface of the bioimplant member with the bone and providing a coating layer of a calcium phosphate material, such as hydroxyapatite on the joint surface including the inside of this recessed part. CONSTITUTION:The recessed part is formed on at least the joint surface of the bioimplant member, such as artificial bone, artificial joint or artificial dental root, consisting of a ceramic material, such as alumina or zirconia and a metallic material, such as pure titanium or titanium alloy, and the calcium phosphate, such as hydroxyapatite, is formed on the joint surface including the inside of this recessed part. The growth and infiltration of the bone into this recessed part are induced in this way and the fatigue load is received not by the coating layer but by the bone infiltering the recessed part itself. Thus, the secure fixability in the bone is imparted to the implant over a long period of time. |
