Four samples of alumina, bioactive glass, bioglaze and hydroxylapatite were obtained in the shape of a cylinder (height 10 mm, diameter 4 mm) and numbering four for each of the bioceramics. The samples were implanted into predrilled holes in the lateral cortex of four adult merino sheep femurs. Six months after surgery the animals were sacrificed. The results show that all the samples were surrounded by newly deposited bone. Alumina samples were surrounded by bone which never came into direct contact with the surface of the samples.The bioactive glass samples showed a direct contact with bone, the bioglaze samples instead, appeared surrounded by fibrous tissue. In both the glass compositions a thick degradation surface layer was observed. Hydroxylapatite samples were totally surrounded by bone structured in longitudinal osteons that came into direct contact with the surface of the implants.
Comparative Histological and Chemical-Physical Analyses on Alumina, Bioactive Glass, Bioglaze and Hydroxylapatite Sheep Bone Implants / A., Moroni; S., Giannini; Zaffe, Davide; Ravaglioli, A; Kraiewsky, A.; A., Venturini; M., Pompili; S., Cantagalli; V., Pezzuto; L., Trinchese. - STAMPA. - 2:(1990), pp. 125-131. (Intervento presentato al convegno 2nd International Symposium on Ceramics in Medicine tenutosi a Heidelberg, D nel 10-11 Settembre).
Comparative Histological and Chemical-Physical Analyses on Alumina, Bioactive Glass, Bioglaze and Hydroxylapatite Sheep Bone Implants
ZAFFE, Davide;
1990
Abstract
Four samples of alumina, bioactive glass, bioglaze and hydroxylapatite were obtained in the shape of a cylinder (height 10 mm, diameter 4 mm) and numbering four for each of the bioceramics. The samples were implanted into predrilled holes in the lateral cortex of four adult merino sheep femurs. Six months after surgery the animals were sacrificed. The results show that all the samples were surrounded by newly deposited bone. Alumina samples were surrounded by bone which never came into direct contact with the surface of the samples.The bioactive glass samples showed a direct contact with bone, the bioglaze samples instead, appeared surrounded by fibrous tissue. In both the glass compositions a thick degradation surface layer was observed. Hydroxylapatite samples were totally surrounded by bone structured in longitudinal osteons that came into direct contact with the surface of the implants.
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