Comparative Evaluation of Push-Out Bond Strength Of Calcium Silicate Based Materials: An Ex-Vivo Study

Materials and Methods: 15 single rooted premolars were selected and middle portion of each root was sectioned perpendicular to the long axis to produce two discs of 2.00 ± 0.05 mm thickness using a diamond disk. 30 root slices were produced and canal lumen was widened using Gates Glidden drills to produce standardized internal diameter of 1.3mm and root sections were filled with ERRM, MTA and Biodentine. Root sections were randomly divided into two subgroups and immersed in PBS for 1 week and 3 weeks. The bond strength was measured using universal testing machine and the failure modes were determined by using stereomicroscope. Results: The bond strength of ERRM was found to be higher at both incubation periods. No significant difference was found between the bond strength of MTA & Biodentine at either 1 week or 3 weeks. Conclusion: ERRM had significantly higher bond strength to root canal walls compared to MTA and Biodentine.