Effect of <fc>ZrO2</fc>,<fc> TiO2</fc>, and <fc>Al2O3</fc> Additions on Process and Kinetics of Bonelike Apatite Formation on Sintered Natural Hydroxyapatite Surfaces

Authors: Mezahi, Fatima Zohra; Oudadesse, Hassane; Harabi, Abdelhamid; Gal, Yann

Source: International Journal of Applied Ceramic Technology, Volume 9, Number 3, 1 May 2012 , pp. 529-540(12)

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Abstract:

In this study, the ability to form bone-like apatite on surface of both pure natural hydroxapatite (<fc>N</fc>-<fc>HA</fc>) and natural hydroxyapatite containing 5 wt% of <fc>ZrO₂</fc> or <fc>TiO₂</fc> or <fc>Al₂O₃</fc>, sintered at 1300°C for 2 h and soaked in the simulated body fluid for different times, was studied. It has been found that the presence of β-tricalcium phosphate in <fc>N</fc>-<fc>HA</fc> + 5 wt% <fc>ZrO₂</fc> or <fc>TiO₂</fc> has promoted the precipitation of bone-like apatite in the <fc>Zr</fc> or <fc>Ti</fc> poorest regions. By contrast, the presence of 5 wt% of <fc>Al₂O₃</fc> did not induce any apatite precipitation on <fc>N</fc>-<fc>HA</fc> sample surfaces.

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1744-7402.2011.02742.x

Publication date: 2012-05-01