Comparison of Apical Microleakage of Four Contemporary Endodontic Sealers by Dye Penetration Method

Abstract

Objective: The study aims to evaluate the sealing ability of total fill bioceramic, GuttaFlow®2, Epoxy (Acroseal) and Zinc Oxide Eugenol base sealer. Material and method: 40 single-rooted lower 1st premolar were selected and divided into 4 equal groups (n = 10). All groups were instrumented by one shape file technique and were obturated by matching gutta-percha with different sealers: Group1 Zinc Oxide Eugenol base (I-Endo), Group 2 Epoxy (Acroseal), Group 3 GuttaFlow®2 and Group 4 total fill BC. The groups were placed under 100% humidity condition for 48 hours. Then, they were submerged in 2% methylene blue dye for one week. Dried, sectioned longitudinally and adhere to the slide. Images were captured by a digital camera fixed in a stereomicroscope, and then the length of the dye penetration was calculated by the Photoshop program in the computer. Results: The dye penetration and standard deviation of the groups were as follows: Group1 (2.55 mm/SD0.80), Group2 (2.89 mm/SD0.48), Group3 (2.29 mm/SD0.82) and Group4 (1.52 mm/SD0.85). There were significant differences between Group 4 and the other 3 groups, and no significant differences among them. Conclusion: No sealer can completely prevent microleakage, but the bioceramic is superior in performance to the other three.