Solubility of bioceramic endodontic sealers in different immersion solutions

Abstract

Objective: To compare the solubility of bioceramic endodontic cements in different immersion solutions. Methods: Thirty discs according to ISO 6876/2012 were prepared and divided into groups: 1. AH Plus (Dentsply-Sirona), 2. Bio-C-Sealer (Angelus), 3. BioRoot RCS (Septodont), 4. BC pre-filled syringe (Tedequim), 5. BC powder-liquid (Tedequim). Each sealer was prepared according to the manufacturer's instructions and handled by a single operator. The samples were placed in an incubator at 37°C and 95% relative humidity for 24hs. After setting and drying, each sample was weighed (Ohaus Pioneer PX 163 balance, OHAUS Corporation, USA) to establish the initial weight. Subsequently, they were immersed, in individual recipients, in 50 cm3 of deionized water for 24hs and in 50 ml of a synthetic buffer solution (pH 7.2), for 30 days, at the end of each period of time the samples were dried and the weight was recorded. Repeated measures analysis of variance (ANOVA) and Tukey multiple comparison test were used for comparison. Comparison between immersion solutions was performed with Student's t-test. The statistical significance value was set at p<0.05. Results: The percentage variation in mass showed significant differences (p<0.05) in all samples between the mean values in water and in buffer solution. AH Plus exhibited the least variation (p<0.05) while, the bioceramic sealers especially in the synthetic tissue buffer solution, showed a progressive increase in mass in the samples. Conclusions: The surrounding environment influences the solubility of calcium silicate-based endodontic cements.