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CC BY-NC-ND 4.0 · Eur J Dent 2021; 15(02): 253-258
DOI: 10.1055/s-0040-1717053
Original Article

Evaluation of 2% Chlorhexidine and 2% Sodium Fluoride as Endodontic Irrigating Solutions on Root Dentine Microhardness: An In Vitro Study

Sangeeta Kulkarni
1   Department of Conservative Dentistry and Endodontics, Al-Badar Dental College and Hospital, Kalaburagi, Karnataka, India
,
Mohammed Mustafa 
2   Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
,
Kiran Ghatole
1   Department of Conservative Dentistry and Endodontics, Al-Badar Dental College and Hospital, Kalaburagi, Karnataka, India
,
Ali Robaian AlQahtani
2   Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
,
Faris Yahya I. Asiri
3   Department of Preventive Dental Sciences, College of Dentistry, King Faisal University, Al-Ahsa, Saudi Arabia
,
Ziyad Ibrahim Alghomlas
4   General Dental Practitioner, Riyadh, Saudi Arabia
,
Tameem Abdullah Alothman
5   General Dental Practitioner, Al-Delam, Saudi Arabia
,
Fawaz Fahad Alhajri
6   General Dental Practitioner, Al-Kharj, Saudi Arabia
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Abstract

Objectives The aim of this study was to evaluate the effects of 2% chlorhexidine gluconate (CHG) and 2% sodium fluoride (NaF) as endodontic irrigants on microhardness of root dentin.

Materials and Methods In this in vitro study, access cavity and root canal preparations were done on 24 freshly extracted anterior teeth. After sectioning into 24 dentin discs using hard tissue microtome in 2 mm thickness, all samples were immersed in solutions of 17% ethylenediamine tetra-acetic acid (EDTA) (2 minutes) followed by 2.5% of sodium hypochlorite (NaOCl) (10 minutes). Then samples were randomly divided into three groups based on the irrigant used: Group I: saline (control group); Group II: 2% NaF; Group III: 2% CHG for two minutes each. Dentin microhardness was measured before (pretreatment), during (after treatment with 17% EDTA and 2.5% NaOCl), and after the experimental period (after treatment with saline, 2% NaF, and 2% CHG) using a Vickers indenter. Statistical evaluation of the data was done using one-way analysis of variance (ANOVA) and the Student’s t-test, and the values are tabulated.

Results Specimens rinsed in 2% CHG showed a significant increase in Vickers hardness number (VHN) values (p < 0.05), as compared with EDTA and NaOCl groups, whereas saline and 2% NaF groups showed no significant difference.

Conclusions NaF did not show any significant effect on microhardness of the root dentin. CHG as an irrigant was seen to have a strengthening effect on dentin microhardness in comparison to NaOCl and EDTA, which has decreased the strength of root dentin.

Keywords

chlorhexidine - EDTA - microhardness - sodium fluoride - sodium hypochlorite - Vickers’ indenter


Publication History

Article published online:
08 October 2020

© 2020. European Journal of Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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