Physicochemical properties of calcium silicate cements for endodontic treatment.

INTRODUCTION

The purpose of this study was to examine the physicochemical properties of novel calcium silicate cements (CSCs) prepared by using a sol-gel method.

METHODS

The compressive strength, morphology, and phase composition of various cements were evaluated after mixing with water, in addition to setting time and pH value.

RESULTS

As solid phases, the sol-gel-derived powders mainly consisted of beta-dicalcium silicate. Setting times for cements mixed with water ranged from 12-42 minutes and were lower for cements with higher starting CaO content. The compressive strength of the CSCs ranged from 0.3-15.2 MPa; these values were significantly different (P < .05). Calcium silicate hydrate (C-S-H) was the principal phase that formed in the hydration process. The CSCs' pH values changed from an initial 11 to a high of 13.

CONCLUSIONS

CSCs display advantageously shortened setting times and might have potential for endodontic use, although further tests are necessary to confirm this.