Comparative Evaluation of Push-out Bond Strength of Novel Smart Seal System with Resilon/Epiphany and Gutta-percha/Ah-plus Obturating System: An in vitro Study

Background: The objective of three-dimensional obturation is to completely seal the canal system from any bacterial ingress from the oral cavity and periradicular tissues. The aim of the study to compare the push-out bond strength of the smart seal C-point obturating system with epiphany resilon obturation system and the gold standard gutta-percha/AH plus system. Materials and Methods: Thirty extracted mandibular first premolars, instrumented until propater F3. All the teeth are divided into three groups of 10 each according to obturating material. Group I AH plus sealer and F3 master gutta-percha cone (Dentsply Maillefer); Group II The resilon core material of size 30/.06 and epiphany sealer; Group III EndoSequence BC sealer and F3 C-point. Each sample was sectioned horizontally into 2 mm thick slices at each of the three-thirds (coronal, middle and apical). Specimens subjected to the universal testing machine at the vertical load at a rate of 1.0 mm/min. The bond strength was recorded in Mpa, by dividing the load in Newton by the area of bonded interface using. The data were analyzed statistically using Statistical Package for Social Sciences version 1.4 and one-way analysis of variance (ANOVA) with Tukey’s post-hoc test. Results: The mean push-out test values for each group were as follows in coronal third Group I (1.5±0.27 Mpa), Group II (0.99±0.21 Mpa), and Group III (3.77±0.47 Mpa); in middle third Group I (1.45±0.14 Mpa), Group II (0.96±0.15 Mpa), and Group III (3.43± 0.122); in the apical third Group I (1.39±0.01 Mpa), Group II (0.90±0.15 Mpa), and Group III (3.3± 0.78 Mpa). ANOVA revealed a statistically significant difference among the groups (P < 0.05). Conclusion: Within the limitations of the study, it can be concluded that C-point/bioceramic sealer showed the highest pushout bond strength followed by gutta-percha/AH plus and epiphany/Resilon.