Abstract
Fe-containing hydroxyapatites and fluoridated hydroxyapatites were synthesized at 80℃ and pH7.4.Fe-containing hydroxyapatites became poorly crystallized with the increase of Fe2+ ions in the solution and a- and c-axis dimensions seemed to decrease slightly.The apparent solubility of Fe-containing hydroxyapatites decreased greatly with the increase of iron content in spite of the decrease in crystallinity.Fe-containing fluoridated apaties were less well crystallized than Fe-free fluoridated apatites.The Fe2+ uptake of fluoridated apatites was independent of fluoride concentration in the solution.a-Axis dimensions of Fe-containing fluoridated apatites decreased with the degree of fluoridation in addition to the decrease related to the substitution of Fe2+ ions.The apparent solubility of Fe-containing fluoridated apatites decreased more than that of Fe-free fluoridated apatites especially at a low fluoride content.
