Comparison of Apical Microleakage between Canals Filled with Gutta-percha/AH-26 and the Resilon/epiphany System by Dye Penetration Method

Root canal obturation is a critical factor in success or failure of a root canal treatment. The material used for root canal obturation must be able to provide a perfect seal. This study aimed to compare the ability of gutta-percha/AH26 and resilon/epiphany to prevent apical microleakage. To conduct this experimental study, 32 extracted single root human teeth were used. Crowns of the teeth were cut and root canals were instrumented using hand K-file in a step-back manner. Smear layer was removed by irrigation with 17% EDTA for 1 minute. The samples were randomly divided into two similar groups and were filled with gutta-percha/AH26 or resilon/epiphany. The specimens were placed in 2% methylene blue solution for 48 hours. The teeth were sectioned longitudinally and the leakage was measured in a linear fashion from apex to crown by stereomicroscope. Data were evaluated by t-test. Based on the study data, there was no statistically significant difference between Gutta- percha/AH26 and Epiphany/Resilon groups (p>0.05). Considering no significant difference between microleakage of gutta-percha and resilon, resilon could be considered as a suitable root filling material after conducting further studies about its physical, chemical, and biologic properties.