Abstract
Three types of hydroxyapatites with various fluoride contents were synthesized at 60°C and pH7.4 under the presence of gelatin as denatured collagen. The crystallinity of the apatites decreased on the whole with the increase of gelatin concentrations, especially in the a-axis direction indicating a high fluoride content. However, no significant difference in chemical compositions, a-axis dimensions, DTA, IR or apparent solubility of each fluoridated apatite was observed. These results suggest that gelatin may only act as an inhibitor of apatite crystal growth.
