The aim of the study was to determine the irrigation solutions impaction on the root canal dentin micro-hardness and surface erosion.All irrigation solutions significantly decreased root canal dentin microhardness (P < 0.05).The greatest reduction was induced by Dual Rinse HEDP (P < 0.05), while 17% EDTA and 17% EDTA + 2.5% NaOCl showed a similar reduction with no significant difference (P > 0.05).SEM analysis did not show any erosion of the dentin surface in the randomly selected specimens.In this study, irrigation solutions have not induced root canal dentin erosion, but significantly reduced the dentin micro-hardness.The greatest reduction was induced by Dual Rinse HEDP.
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Grinkevičiūtė et al. (2019) studied this question.