| 摘要 |
PURPOSE:To achieve a remarkable anchoring effect by forming a biologically active material layer on a deep inner surface of a recess in a base material surface using a slurry liquid in which a powder of a biologically active material is scattered. CONSTITUTION:When an artificial bone A which has a surface layer formed having protrusions 4a and recesses 4b measuring about 100-400mum is immersed into a slurry liquid 12 in which a biologically active material such as apatite, bioglass, beta-bone tri-calcium phosphate lime, 'ceravital' (phonetic) or the like is crushed into fine powder to be scattered in a medium, the liquid is attached entirely to a surface layer 2 by a surface tension. Then, air is sent against the artificial bone A to blow off the slurry liquid 12 on the side of external surfaces of the protrusions of the surface layer 2 and then, the medium of the slurry liquid is evaporated dry by adding heat or heating. Thereafter, the bone is heated up to a high temperature exceeding 900 deg.C to bake the biologically active material attached in the recess 4b and a biologically active material layer 3 is formed. This facilitates the infiltration of a new biological tissue deep into the recesses 4b thereby enabling the fastening of the artificial bone firmly on an organic bone. |
