Acta Scientific Dental Sciences (ASDS)(ISSN: 2581-4893)

Research Article Volume 7 Issue 2

Comparative Evaluation of Smear Layer Removal in Retrograde Preparation Using 10% Citric Acid And 7% Maleic Acid - An In Vitro Scanning Electron Microscopy Study

SV Satish, Deepa Gandu* and Ashwini M Patil

Department of Conservative Dentistry and Endodontics, Navodaya Dental College, India

*Corresponding Author:Deepa Gandu, Department of Conservative Dentistry and Endodontics, Navodaya Dental College, India.

Received: December 15, 2022; Published: January 16, 2023


Aim: The aim of this study is to compare and evaluate the smear layer removing ability of Citric acid and Maleic acid in retrograde preparations using scanning electron microscope.

Materials and Methods: Eighty single-rooted teeth have been chosen and decoronated at cemento-enamel junction. Root canal preparation was completed with ProTaper rotary Ni-Ti files upto F3 size. After each instrumentation, 3% NaOCl was used for irrigating root canals. Canals were obturated with 6% gutta-percha coated with AH plus resin sealer. Apical 3 mm of the root was resected at a plane perpendicular to the long axis of the root. A class I retrograde preparation was carried out using ultrasonic retrotips to a depth of about 3 mm. Debris was initially washed off using a normal saline. The specimens were categorized into four groups (n = 20) based on the irrigating solutions used which are 10% Citric acid and 7% Maleic acid as experimental groups and normal saline, 17% EDTA as control groups. The specimens will be sectioned longitudinally and examined under scanning electron microscope for the evaluation of smear layer.

Statistical Analysis: Statistical analysis was done using Kruskal-Wallis ANOVA and pairwise comparison using Mann-Whitney U-test.

Results: Group I (saline) was least efficient in removing the smear layer and most of the samples were occluded with smear layer. Group II (17% EDTA), Group III (10% Citric acid), and Group IV (7% Maleic acid) resulted in the efficient removal of the smear layer from the retrograde cavity with mean scores of 1.35, 1.60, and 1.35, respectively. Inter group comparisons showed statistically significant difference between Group IV (7% Maleic acid) and all other groups. There is no statistically significant difference found between Group III (10% Citric acid) and Group II (17% EDTA).

Conclusion:Within the limitations of this in vitro study, it can be concluded that irrigation with 7% Maleic acid is more efficacious in removing the smear layer than 17% EDTA and 10% Citric acid during retrograde root canal preparation.

Keywords:Citric Acid; Maleic Acid; Smear Layer; Retrograde Preparation; Ultrasonic Retrotips


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Citation: Deepa Gandu., et al. “Comparative Evaluation of Smear Layer Removal in Retrograde Preparation Using 10% Citric Acid And 7% Maleic Acid - An In Vitro Scanning Electron Microscopy Study".Acta Scientific Dental Sciences 7.2 (2023): 149-153.


Copyright: © 2023 Deepa Gandu., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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