複合構造によるHydroxyapatite ceramicの強度向上に関する研究

抄録

Hydroxyapatite ceremic has an excellent biocompatibility. However, there is required some improvement in respect to the mechanical characteristics of hydroxyapatite ceramic. In order to improve the mechanical characteristics of hydroxyapatite ceramic, this study is on the method of forming a composite structure of hydroxyapatite ceramic adhered to the metals by glass.
Experimental proceaures were as follows:
a) Bonding strength of the metals with 4 types of glasses adhered to them.
b) Bonding strength of the metals by the addition to the glass of 5% (wt%) of Sn or Ba.
c) Bonding strength of hydroxyapatite ceramics by the addition to the glass of 5% (wt%) of Sn or Ba.
d) Bonding strength of hydroxyapatite ceramic and metals by the addition to the glass of wt% Ba. 5% (wt%)
e) Study of adherence mechanism by S. E. M. and E. P. M. A.
The results obtained showed that the bonding strength between the glass, which was produced in this study, and the Ti, Co-Cr-Ti alloy was good.
Especially, the bonding strength between the Co-Cr-Ti alloy and the hydroxy-apatite by the addition to the glass of 5% (wt%) of Ba was shown to be from 308.5 kg/cm² to 420 kg/cm² in the pull out test.