barium-hydroxyapatite and tricalcium-phosphate

Characterization of synthetic calcium phosphates is reported and compared with previous studies. Barium hydroxyapatite was also synthesized. Shrinkage on sintering, water absorption, tensile strength, porosity and X-ray diffraction patterns were studied. Hydroxyapatite and beta-tricalcium phosphate show compositional and mechanical property variation dependent on sintering temperatures. The property change on introduction of barium removes the practical value. X-ray diffraction analysis is considered essential before clinical use due to sensitivity of composition to sintering conditions.

Topics: Barium Compounds; Calcium Phosphates; Ceramics; Chemical Phenomena; Chemistry, Physical; Durapatite; Hydroxyapatites; Temperature