Abstract
Introduction: The root canal therapy is done with the intention to seal it off from any fluid leaks, thus enhancing the longevity of the therapy. The seal between the obturating material and the dentinal walls of the root surface is done by the endodontic sealer. The sealer is designed in such a way that it has to mould itself with the curves and follow the shapes of the root dentinal wall.
 Aims: To compare in-vitro the tensile bond strength of four different endodontic sealers to root dentin and Gutterpercha.
 Methods: Thirty six single ‑ rooted canine and premolar teeth with total apical formation were selected. Working length was determined after the crown portion was cut. BMP was done. Teeth were grouped as Group Ⅰ: MTA‑ based sealer, Group Ⅱ: Bioceramic Sealer, Group Ⅲ: Calcium based sealer, Group Ⅳ: Epoxy resin based (AH Plus sealer). Sealers were manipulated according to the manufacturer protocol. Obtuartion was done using 4% gutta ‑ percha. Later tensile strength test was done on the root slices of 2 mm thickness using universal testing machine. 6 mm in diameter Aluminum cylinders, were stabilized on the gutta–percha with small amounts of wax and were filled with one of the sealers. After setting each sealer, the drops of wax were removed and the tensile bond strengths of all the samples were measured using universal testing machine. The data was analysed using Tukey tests and ANOVA.
 Results: Among the 4 groups highest bond strength was found in Group Ⅱ (BioRootTMRCS) (P < 0.05) and the least was Group Ⅰ (MTA Fill apex).
 Conclusion: Bioceramic sealer’s tensile bond strength was highest followed by AH26, Sealapex and MTA‑ based sealer.
 Keywords: Bond strength; BioRoot TMRCS Sealer; MTA Fill apex; AH Plus Sealer, Sealapex, tensile strength.
Highlights
The root canal therapy is done with the intention to seal it off from any fluid leaks, enhancing the longevity of the therapy
The sealer is designed in such a way that it has to mould itself with the curves and follow the shapes of the root dentinal wall
Two‐ way ANOVA and Tukey tests multiple post hoc tests were done for the statistical analysis. there was a statistically significant values noted between the groups, by using Statistical Package for the Social Sciences (SPSS), SPSS 21.0 (IBM Corporation, USA) with the p < 0.05 as significant
Summary
The root canal therapy is done with the intention to seal it off from any fluid leaks, enhancing the longevity of the therapy. The seal between the obturating material and the dentinal walls of the root surface is done by the endodontic sealer.[1] The sealer is designed in such a way that it has to mould itself with the curves and follow the shapes of the root dentinal wall. It should allow the proper placement of the obtuartion material in the canal.[2] Most commonly the sealers used in the endodontic therapy are resin‐ based sealers, calcium hydroxide, and zinc oxide eugenol. There are various notable properties of the sealer that make them a choice among the resin sealers like lesser solubility and good biocompatibility.[5]
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