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  1. Nagendrababu V, Sheriff Sultan O, Kannathasan S, Patel AS, Chitra E, Neelakantan P, et al.
    Restor Dent Endod, 2018 Feb;43(1):e1.
    PMID: 29487832 DOI: 10.5395/rde.2018.43.e1
    Objectives: To determine the effect of root canal irrigants on the hydrophobicity and adherence ofStaphylococcus epidermidis(S. epidermidis) to root canal dentinin vitro.

    Materials and Methods: Root dentin blocks (n= 60) were randomly divided into 4 groups based on the irrigation regimen: group 1, saline; group 2, 5.25% sodium hypochlorite (NaOCl); group 3, 5.25% NaOCl followed by 17% ethylenediaminetetraacetic acid (EDTA); group 4, same as group 3 followed by 2% chlorhexidine (CHX). The hydrophobicity ofS. epidermidisto root dentin was calculated by cell surface hydrophobicity while the adherence was observed by fluorescence microscopy, and bacteria were quantified using ImageJ software (National Institutes of Health). Statistical analysis of the data was done using Kruskal-Wallis test and Mann-WhitneyUtest (p= 0.05).

    Results: The hydrophobicity and adherence ofS. epidermidisto dentin were significantly increased after irrigating with group 3 (NaOCl-EDTA) (p< 0.05), whereas in group 4 (NaOCl-EDTA-CHX) both hydrophobicity and adherence were significantly reduced (p< 0.05).

    Conclusions: The adherence ofS. epidermidisto dentin was influenced differently by root canal irrigants. Final irrigation with CHX reduces the bacterial adherence and may impact biofilm formation.

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