Evaluation of the smear layer removal and erosive capacity of EDTA, boric acid, citric acid and desy clean solutions: an in vitro study

摘要

Background The purpose of this study was to investigate the smear layer removal and erosive capacity of various irrigation solutions with sequential use of NaOCl on instrumented root canal walls. Methods The root canals of single-rooted teeth were instrumented with ProTaper rotary instrument. Then, the teeth were randomly divided into five experimental groups. The root canals were irrigated with one of the following solutions (5?mL/1?min): 5?% EDTA, 5?% boric acid (BA), a mixture of BA and CA, 2.5?% citric acid (CA) and 5?% Desy Clean. After irrigating with 2.5?% NaOCl and distilled water, the roots were split into two halves and each half was prepared for SEM examination. Representative photographs were taken from each third at x500 and x1000 magnifications. Double blind scoring was performed by two calibrated observers for smear layer and erosion. The scores were statistically analyzed using Kruskal-Wallis, Dunn’s post hoc and Spearman’s correlation tests (p?=?0.05). Results There were statistically significant differences among the solutions by means of smear layer and erosion (p?p?r?=??0.684; p? Conclusion Desy Clean can be a promising agent as an irrigation solution with optimal smear layer removal capacity and less erosive effects.