Abstract

The rate of hydroxyapatite (HA) formation in several calcium phosphate cement (CPC) systems was promoted when a phosphate solution instead of water was used as the cement liquid. The accelerated HA formation reduced the hardening time (HT) of the cements. In the cement system consisting of tetracalcium phosphate (TTCP), dicalcium phosphate anhydrous (DCPA), and distilled water, the presence of small TTCP particles (median diameter of 2.7 μm) reduced phosphate concentration in liquid phase, inhibited HA formation, and prolonged HT.

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