title: Comparative evaluation of 15% ethylenediamine tetra-acetic acid plus cetavlon and 5% chlorine dioxide in removal of smear layer: A scanning electron microscope study.
abstract: OBJECTIVE
  The purpose of this study was to compare the efficacy of smear layer removal by 5% chlorine dioxide and 15% Ethylenediamine Tetra-Acetic Acid plus Cetavlon (EDTAC) from the human root canal dentin.
  
  
  METHODS
  Fifty single rooted human mandibular anterior teeth were divided into two groups of 20 teeth each and control group of 10 teeth. The root canals were prepared till F3 protaper and initially irrigated with 2% Sodium hypochlorite followed by 1 min irrigation with 15% EDTAC or 5% Chlorine dioxide respectively. The control group was irrigated with saline. The teeth were longitudinally split and observed under Scanning electron microscope SEM (×2000).
  
  
  METHODS
  The statistical analysis was done using General Linear Mixed Model.
  
  
  RESULTS
  At the coronal thirds, no statistically significant difference was found between 15% EDTAC and 5% Chlorine dioxide in removing smear layer. In the middle and apical third region 15% EDTAC showed better smear layer removal ability than 5% Chlorine dioxide.
  
  
  CONCLUSIONS
  Final irrigation with 15% EDTAC is superior to 5% chlorine dioxide in removing smear layer in the middle and apical third of radicular dentin.
authors.affiliation: Command Military Dental Centre, Central Command, Lucknow, India.
authors.forename: Sandeep
authors.initials: S
authors.lastname: Singh
authors.forename: Vimal
authors.initials: V
authors.lastname: Arora
authors.forename: Inderpal
authors.initials: I
authors.lastname: Majithia
authors.forename: Rakesh Kumar
authors.initials: RK
authors.lastname: Dhiman
authors.forename: Dinesh
authors.initials: D
authors.lastname: Kumar
authors.forename: Amber
authors.initials: A
authors.lastname: Ather
keywords: Chlorine dioxide; ethylenediamine tetra-acetic acid plus cetavlon; smear layer removal