Abstract
Hydroxyapatite, having a crystallinity similar to biological apatites, is required for X-ray crystallographic and other studies in biological apatites.
Our studies were made on synthesized compounds having a crystallinity similar to human enamel prowder. Hydroxyapatite was prepared by a modification of the alkaline precipitation method of Napper.
The synthetic hydroxyapatite X-ray powder diffraction patterns were similar to human dental enamel and suggested a similar degree of crystallinity.
Analysis of the composite hydroxyapatite sample showed that the Ca: P ratio was 1.62±0.02. The sample was thus calcium-deficient hydroxyapatite, but here too, it was similar to human dental enamel.
