Ceramics-Silikáty 55 (2) 123-126 (2011)

SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITECALCIUM HYDROXIDE FOR DENTAL COMPOSITES

M. Ansari, S. M. Naghib, F. Moztarzadeh, A. Salati

In this work hydroxyapatite was precipitated from calcium hydroxide and phosphoric acid. Calcium hydroxide forms in addition to hydroxyapatite in samples with calcium to phosphorus ratio more than the stoichiometric one (Ca/P = 1.67). The effect of changing the pH of the precipitation solution was investigated. Changing the pH of solution had no effect on the amount of compounds formed in the structure. In contrast, an increase in Ca/P ratio increases the total amount of calcium hydroxide which is suitable for dental composite application.

Keywords: Hydroxyapatite; Ca/P ratio; pH; Calcium hydroxide