RESUMO
Aim: The purpose of this study was to assess the sealing ability of Biodentine (BD) and mineral trioxide aggregate (MTA) as retrograde filling materials after irrigation with 17% ethylenediaminetetraacetic acid (EDTA) and QMix irrigating solutions. Materials and Methods: Decoronation of 48 permanent maxillary central incisors was done. Root canal instrumentation was carried out in the samples. The apical root was resected for about 3 mm and retrocavities were prepared. Teeth were allocated into two groups (n = 24). MTA was used in Group 1. BD was used in Group 2. Depending on irrigation, the groups were subdivided A, B, and C subgroups. Group A - 0.9% saline; Group B - 17% EDTA; and Group C - QMix were used. The resected root end was irrigated with 5 ml of all irrigating solutions for 1 min. After final irrigation, cavities were filled with retrofilling materials in each group. Nail enamel was applied to the surfaces of the roots apart from the resected end. Roots were placed in India ink for 72 h. Teeth were sectioned longitudinally and microleakage was determined with a stereomicroscope. Statistical Analysis: Analysis was done using the one-way analysis of variance, Independent t-test, and post hoc test. Results: Statistically significant difference in the degree of microleakage was observed between irrigating solutions and the retrofilling materials. Conclusion: BD exhibits a better sealing ability compared to MTA as a retro filling material following QMix irrigation.
