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

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In this study, the ability to form bone‐like apatite on surface of both pure natural hydroxapatite (NHA) and natural hydroxyapatite containing 5 wt% of ZrO2 or TiO2 or Al2O3, 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 NHA + 5 wt% ZrO2 or TiO2 has promoted the precipitation of bone‐like apatite in the Zr or Ti poorest regions. By contrast, the presence of 5 wt% of Al2O3 did not induce any apatite precipitation on NHA sample surfaces.

Document Type: Research Article

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

Publication date: May 1, 2012

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