A comparative evaluation of the sealing ability of two calcium silicate based sealers and a resin epoxy-based sealer through scanning electron microscopy and bond strength

Mai H Abdelrahman,Mohamed Y Hassan

doi:10.20396/bjos.v20i00.8664073

Abstract

Aim: this study aimed to compare the sealing ability of two types of commercially available calcium silicate bioceramic based root canal sealers and a resin based root canal sealer. Methods: Twenty one single-rooted teeth were used, samples (n= 21) were randomly divided into three groups according to the sealer used (group A; ADSEAL, group B; Wellroot, group C; Ceraseal). Roots were then cleaved longitudinally in the labiolingual direction; all samples were then sectioned at three, six, and nine mm from the root tip. The penetration of sealers into the dentinal tubules was examined at 1000x with a scanning electron microscope. Data were tested for normality using Shapiro Wilk test. ANOVA test was used for analyzing normally distributed data followed by Bonferroni post hoc test for pair-wise comparison. Significance level p≤0.001. Results: groups B and C showed better sealing ability than group A in all the three sections. The coronal section showed higher sealing ability than the middle section followed by the apical section in the three tested groups. Conclusion: it can be concluded that both calcium silicate-based sealers had better sealing ability and higher bond strength than the resin epoxy- based sealer.

Highlights

Efficient filling and complete sealing of the previously cleaned and shaped root canal system are crucial steps that have an impact on the long-term success of the treatment[1,2]
Incorporation of sealers is mandatory as gutta-percha does not adhere to the dentinal walls and cannot prevent leakage by it-self, sealers are used to fill the irregularities and to penetrate into dentinal tubules attempting to achieve a hermetic seal of the root canal system[2]
In order to achieve a successful endodontic treatment and good prognosis, it is crucial to have a tight apical seal which is dependent on proper instrumentation and cleaning of the coot canal system in conjunction to adequate obturation[10]

Summary

Introduction

Efficient filling and complete sealing of the previously cleaned and shaped root canal system are crucial steps that have an impact on the long-term success of the treatment[1,2]. Incorporation of sealers is mandatory as gutta-percha does not adhere to the dentinal walls and cannot prevent leakage by it-self, sealers are used to fill the irregularities and to penetrate into dentinal tubules attempting to achieve a hermetic seal of the root canal system[2]. Root canal sealers should attain strong adherence between gutta-percha and the dentinal walls preventing gap existence at the sealer-dentine interface[2,3]. Achieving a three-dimensional seal of root canal which is essential to ensure complete prevention of reinjection of the canal and for preserving the health of the periapical tissues, ensuring successful treatment[1,4].

Objectives

Methods

Results

Conclusion