Marginal leakage in root canal filling after final irrigation with hydroalchoolic solutions

Abstract

The purpose of this study was to evaluate the apical marginal leakage in root treated with different alcohol content agents. Thirty seven human single-rooted teeth were instrumented and irrigated with saline solution and in sequence with 17% EDTA. Several alcohol content solutions were applied before the root canal was filled with Sealapex and gutta percha points. The specimens were then separated in following groups: I – 2.5% NaOCl; II – 2.5% NaOCl with 99.3% ethylic alcohol (1:1 v/v); III – 2.5% NaOCl with 70 (v/v) alcohol and IV – sodium laurel sulfate with isopropyl alcohol (1:1 v/v). All roots were immersed in 2% Rhodamine B, at environment temperature, for 7 days. The extension of dye penetration was measured by Digital Image Tools Program. Results were statistically analyzed by Kruskal Wallis method at 5% significance level. Among the experimental groups, the least extension of dye penetration were observed in groups II and III, with statistically significance of group I and IV (p < 0.05).