Physicochemical Properties of Four Different Calcium Silicate-based Cements

Objectives: The aim of this study was to evaluate the physical-chemical properties of different calcium silicate-based cements.
Methods: MTA Bio (Angelus, Londrina, Brazil); HP MTA (Angelus, Londrina, Brazil); Biodentine (Septodont, Saint-Maur-des-Fossés, France); Pro Root MTA (Dentsply, York, USA) were evaluated following the standards of ISO 6876 and ANSI/ADA 57 specifications. Tested materials were kept under storage conditions and handled according to the respective manufacturer’s standards. They were removed from the packaging only at the time of testing. Solubility; Quantification of calcium, phosphorus and arsenic ions; pH (Hydrogenion Potential); Electric conductivity tests were performed. Non-parametric Kruskal-Wallis model was used for analysis of variance (ANOVA), considering the significance level of 5%, making comparisons between groups in different periods. Dunn Test was used for the individual comparison.
Results: MTA HP presented the lowest mean values of solubility, statistically different from the other materials (p<0.05). The highest solubility values (p<0.05) were found with Biodentine. In the release of calcium ions, it was possible to observe higher mean values for MTA Bio (p<0.05). The lowest mean values were observed when analyzing ProRoot MTA (p <0.05). When analyzing the phosphorus and arsenic ions, no significant differences were observed between the materials (p>0.05). The materials tested showed similar behavior of pH and similar electrical conductivity, without statistically significant differences between the materials (p>0.05).
Conclusions: Based on the employed methodology the materials fulfill the ANSI/ADA requirements for root canal sealer materials. MTA Bio was related to higher release of calcium ions.