Formation of Precipitates on the Surface of Root Dentin After Various Final Irrigation Protocols

Abstract

Background:The aim of this study was to investigate the amount of precipitates formed on the surface of root dentin after irrigation with sodium hypochlorite (NaOCl) and final chlorhexidine irrigation (CHX), ethylenediaminetetraacetic acid (EDTA) + CHX, and new combined solutions: QMiX or MTAD. Methods: By using the method of random sampling the roots of 90 front maxillary human teeth were divided into five groups on the basis of the final irrigation protocol. The amount of precipitates is determined in the coronal, middle and apical thirds by using the by scanning electron microscopy (SEM).Results: SEM analysis demonstrated a significantly higher amount of precipitate was formed in the CHX group compared to the MTAD group in the coronary (p <0.05) that is QMiX group in the middle third (p <0.05). In the apical third, a significantly higher amount of precipitates was found in the CHX group compared to the MTAD group and the QMiX group (p <0.05). Conclusion:Obtained results show that after irrigation with NaOCl and final irrigation with CHX more precipitate is formed than after the irrigation with NaOCl and final irrigation with MTAD and QMIX.