Comparative bone growth behavior in granules of bioceramic materials of various sizes

1999/01/01 by H. Oonishi, Larry L. Hench, L. L. Hench +8 · 24 citations
Engineering · Medicine · Dentistry · #Bone Tissue Engineering Materials #Bone and Dental Protein Studies #Dental Implant Techniques and Outcomes

paper · doi:10.1002/(sici)1097-4636(199901)44:1<31::aid-jbm4>3.0.co;2-9

Abstract

Various bioceramic materials were implanted into 6-mm-diameter holes made in the femoral condyles of mature Japanese white rabbits using different-sized granules to find an optimal material and granule diameter for use as a bone graft. Bioceramics include a bioinert ceramic (Alumina), surface-bioactive ceramics [hydroxyapatite (HAp) and Bioglass(R)], and resorbable bioactive ceramics [alphatricalcium phosphate (alpha-TCP), beta-TCP, tetracalcium phosphate (TeCP), Te. DCPD, Te. DCPA, and low-crystalline HAp]. Granule sizes were 100-300, 10, and 1-3 microm. Bone growth behavior varied with the kind of bioceramic and the size used. For surface-bioactive ceramics, 45S5 Bioglass(R) led to more rapid bone proliferation than synthetic HAp. In resorbable bioactive ceramics, the order of resorption was: low-crystalline HAp and OCP > TeCP, Te DCPD, Te DCPA > alpha-TCP, beta-TCP. In terms of biocompatibility, alpha-TCP was better than beta-TCP.

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