Commercial hydroxyapatite was reinforced by adding small amounts (2 and 4 wt%) of P2O5-based glasses during its sintering process. The composites prepared had a chemical composition closely related to the mineral part of bone tissues in terms of trace elements usually detected, such as Na, K and Mg. X-ray diffraction analysis (XRD) showed that the glass reinforced-HA composites were composed of a HA matrix and variable amounts of tricalcium phosphate phase, depending on sintering temperature and glass composition. These composites were shown to have much higher biaxial bending strength than sintered HA, 107 MPa for Ha/2% of 35P2O5-35CaO-10Na2O-10K2O-10MgO glass composite and 28 MPa for sintered HA. The presence of β-tricalcium phosphate in the microstructure of the composites is an important factor in the reinforcement process.
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References
V. C. BARNEY, M. P. LEVIN and D. F. ADAMS, J. Periodont. 57 (1986) 764.
R. Z. LEGEROS, Adv. Dent. Res. 2 (1988) 164.
H. AOKI, in “Science and medical applications of hydroxyapatite” (Takayama Press System Center, JAAS, Tokyo, 1991) p. 165.
P. DUCHEYNE, J. Biomed. Mater. Res. Appl. Biomater. 21 (1987) 219.
J. C. HEUGHBAERT and G. BONEL, in “Biological and biomechanical performance of biomaterials” edited by P. CHRISTEL, A. MEUNIER and A. J. C. LEE (Elsevier Science Publishers B.V., Amsterdam, 1986) p. 9.
L. G. ELLIS, D. G. A. NELSON and J. D. B. FEATHERSTONE, J. Biomed. Mater. Res. 22 (1988) 541.
W. V. RAEMDONCK, P. DUCHEYNE and P. D. MEESTER, in “Metal and ceramic biomaterials” edited by P. DUCHEYNE and G. W. HASHI (CRC Press, Boca Raton, FL, 1984) p. 143.
E. C. SHORS and R. E. HOLMES, in “An introduction to bioceramics” edited by L. L. HENCH and J. WILSON (World Scientific, Hong Kong, 1993) p. 181.
C. REY, Biomaterials 11 (1990) 14.
G. EVANS, J. BEHIRI, J. CURREY and W. BONFIELD, J. Mater. Sci. Mater. Med. 1 (1990) 38.
C. REY, M. FRÈCHE, M. HEUGHEBAERT, J. C. HEUGHEBAERT, J. L. LACOUT and M. VIGNOLES, in “Bioceramics 4, London, 1991”, edited by W. BONFIELD, G. W. HASTINGS and K. E. TANNER (Butterworth-Heinemann, London) p. 57.
G. WITH, H.VAN DIJK, N. HATTU and K. PRIJS, J. Mater. Sci. 16 (1981) 1592.
M. AKAO, H. AOKI and K. KATO, J. Mater. Sci. 16 (1981) 809.
J. SANTOS, J. KNOWLES, R. REIS, F. MONTEIRO and G. HASTINGS, Biomaterials 15 (1994) 5.
U. SOLTESZ, H. RICHTER and R. KIENZLER, in “High Technology Ceramics” (Elsevier Science Publishers, B.V., Amsterdam, 1987) p. 110.
EURONORM 103-71, in “Détermination Micrographique de la Grosseur du Grain Ferritique ou Austénitique des Aciers”, 1971.
G. DACULSI, R. G. LEGEROS, E. NERY, K. LYNCH and B. KEREBEL, J. Biomed. Mater. Res. 23 (1989) 883.
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This paper was accepted for publication after the 1995 Conference of the European Society of Biomaterials, Oporto. Portugal, 10–13 September.
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Santos, J.D., Silva, P.L., Knowles, J.C. et al. Reinforcement of hydroxyapatite by adding P2O5-CaO glasses with Na2O, K2O and MgO. J Mater Sci: Mater Med 7, 187–189 (1996). https://doi.org/10.1007/BF00121259
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DOI: https://doi.org/10.1007/BF00121259