SOLUBILITY IN WATER OF RESIN BASED ROOT-CANAL SEALERS

AIMS. The solubility of two epoxy resin-based root canal sealers was tested in vitro, comparing them to a conventional ZnOE-based sealer.
MATERIALS AND METHODS. Thirty similar specimens of each material were prepared using stainless steel ring molds with the same internal diameter and the same height. Solubility was determined by using mean weight loss (%) after 24 hours according to the International Standards Organization 6876 standard and the American Dental Association specifications No. 57. The results were analyzed statistically with a one-way analysis of variance test (ANOVA).
RESULTS. ANOVA test showed significant differences among the resin-based sealers and the ZnOE-based sealer. Resin-based sealers reported significant low solubility percentages (P<0.05).
CONCLUSIONS. All the materials fulfilled the requirements of the International Standard 6876 and ANSI/ADA specification No. 57 demonstrating a weight loss of less than 3%. Under the conditions of the present study, tested resin-based root canal sealers were of very low solubility. They can be considered virtually insoluble.