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IP Annals of Prosthodontics and Restorative Dentistry


Evaluation of root dentin microhardness prepared with hand and two rotary file systems with 2.5% sodium hypochlorite irrigation solution - an in vitro study


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Original Article

Author Details : Murali Krishna Raju Saripella, Ravi Kumar Konagala*, Anupreeta A, Lakshman Varma U,, Ramesh P

Volume : 6, Issue : 2, Year : 2020

Article Page : 94-99


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Abstract

Background: Success in endodontic therapy depends on effective chemomechanical preparation of the
root canal, but their compromising effects on root dentin microhardness should be taken into consideration.
AIM: To evaluate the effect on microhardness of root dentin prepared with hand stainless steel K-Files,
ProTaper and K3 NiTi Rotary file systems with 2.5% Sodium Hypochlorite as common irrigating solution.
Materials and Methods : Fifty human mandibular single-rooted premolar teeth selected. Access opening
was done and working length was determined. All the specimens were then randomly divided into five
groups with 10 specimens in each group. Group I- Neither instrumented nor irrigated. Group II- 2.5%
NaOCl irrigation Group III- Stainless steel K-files using 2.5% NaOCl Group IV- ProTaper rotary files
using 2.5% NaOCl solution. Group V - K3 rotary files using 2.5% NaOCl solution. The specimens were
prepared for microhardness testing at a distance of 500 mm and 1000 mm from the lumen of each sample
using vickers microhardness test.
Results: 1) Significant difference in microhardness values were seen at 500 mm and 1000 mm (P<0> from the lumen in all groups. 2) Statistically significant differences were seen among all the groups except
between Group IV & V.
Conclusion: Instrumentation with NiTi Rotary files affected dentin microhardness significantly to a lesser
extent when compared to Stainless Steel K files using 2.5% NaOCl irrigating solution.

Keywords: Microhardness, Sodium hypochlorite, Nickel Titanium Rotary files., 


Doi : 10.18231/j.aprd.2020.020

How to cite : Saripella M K R, Konagala R K, Anupreeta A, Lakshman Varma U, , Ramesh P, Evaluation of root dentin microhardness prepared with hand and two rotary file systems with 2.5% sodium hypochlorite irrigation solution - an in vitro study. IP Ann Prosthodont Restor Dent 2020;6(2):94-99

Copyright © 2020 by author(s) and IP Ann Prosthodont Restor Dent. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org)