Comparison of solubility of white mineral trioxide aggregate in synthetic tissue fluide versus distilled water

Abstract

Solubility of dental materials is one of the important features that can affect other properties such as microleakage and biocompatibislity. According to the standard method, solubility of dental material evaluates in distilled water. Since medium has interaction with bioactive materials, different physical and chemical behaviours should be expected. Up to now the solubility of white mineral trioxide aggregate (WMTA) as a bioactive material has not been evaluated in different solutions than distilled water. Therefore, the aim of this study was to compare the solubility of WMTA in distilled water and synthetic tissue fluid (STF). Materials & Methods: Twelve specimens of WMTA were mixed with water and divided to 2 groups of 6 specimens. Each group was immersed in distilled water and STF. The solubility of materials at periods of 2, 9, 14, 21, 30, 50, and 78 days after the begining of the study were measured by ISO standard (weight difference) method. After calculation of means standard deviation, One-way ANOVA and post hoc Tukey test were used to analysis the data. P<0.05 was assumed as significant. Results: The means standard deviation of total solubility of WMTA in distilled water and STF were 1.56 and -3.58 %, respectively. Negative sign means lack of solubility and ganing weight of materials that immersed in solutions. The one-way analysis of variance revealed the significant difference between experimental groups (P<0.0001). Conclusions: WMTA solubility was significantly less in STF than distilled water.