Comparative Evaluation of Push Out Bond Strength Of Two Commercially Available MTA and Biodentine - an in Vitro Study

Introduction: Root perforation complicates the endodontic treatment and compromises the prognosis if not properly managed. With the advent of newer materials for sealing, the clinical management and prognosis have improved. The aim of this study was to evaluate the push-out bond strength of two commercially available MTA and Biodentine. Materials and Methods: 45 freshly extracted maxillary incisors were selected for the study. Teeth were cleaned and immersed in 5.25%NaOCl solution to remove hard and soft tissues. The coronal and apical segments were sectioned and removed. The root canal space of the horizontal root slices obtained was enlarged to 1.3mm using Peeso reamer size:4. The samples were divided into 3 groups (15 samples each). The root canal spaces of the sectioned samples were restored with three different repair materials-Group-1: MTA (Angelus), Group-2:Biodentine, Group-3: Pro Root MTA (Dentsply). All the samples were stored in contact with the moistened gauze for 7 days and subjected to push-out assay. The maximum load applied to dislodge the material was recorded in Newton. The obtained results were then subjected to statistical analysis using one way ANOVA and Tukey’s post- hoc test(P<0.05). Results: The results of the present study showed that Biodentine exhibited better push-out bond strength than MTA and ProRoot MTA. There is no statistical significant difference between the push-out bond strength of MTA and Pro root MTA. Conclusion: Within the limitations of this study, it can be concluded that Biodentine showed better push-out bond strength than MTA.