Effect of <fc>ZrO<sub>2</sub></fc>,<fc> TiO<sub>2</sub></fc>, and <fc>Al<sub>2</sub>O<sub>3</sub></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)
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
Publication date: 2012-05-01