To compare and determine the presence of voids in calcium hydroxide, epoxy resin, and tricalcium silicate when used as a sealer in single cone obturation technique-an in vitro study

Aim: The purpose of this study was to evaluate and compare the area of voids in calcium hydroxide, epoxy-resin and tricalcium silicate-based sealers when employed with single cone obturation technique. Materials and Method: Fifteen extracted single-rooted mandibular premolar teeth were cleaned and shaped and divided into three groups according to the three different sealers used. Single cone obturation was done using gutta-percha and three sealers: Sealapex, AH Plus, and Bioroot RCS sealers, respectively. These teeth were decoronated at the cementoenamel junction and the roots were sectioned at apical, middle, and coronal third, and a stereomicroscope was used to assess the area of sealer voids and digital images were taken and was analyzed by image J software. The results were statistically analyzed using SPSS software and Kruskal– Wallis and Mann–Whitney tests. Results: All three groups showed voids in all the sections. Significant differences were found between these sealers regarding their section wise area of voids (P < 0.05). Similarly, there were significant differences in their overall area of voids (P < 0.05) with AH Plus showing significantly least area of voids followed by Sealapex. Conclusion: Single cone obturation with AH Plus showed least mean area of voids, whereas Single cone obturation with BioRooot RCS had significantly the most mean area of voids.