Effect of Chelating Agents on Compressive and Push-Out Bond Strength of Calcium Silicate-Based Materials in Furcal Perforations

Objective: To evaluate and compare the effects of 17% Ethylenediaminetetraacetic acid (EDTA) and 7% Maleic Acid (MA) on the push-out bond strength (POBS) and compressive strength (CS) of Biodentine and Bio-C Repair when used for furcal perforation repair. Material and Methods: Sixty extracted human mandibular molars were decoronated, and standardized furcal perforations were created. The teeth were mounted and randomly divided into two groups: Group I, Biodentine, and Group II, Bio-C Repair. Each group was irrigated with 2.5% Sodium Hypochlorite and then subdivided into three: Group A – 17% EDTA, Group B – 7% MA, and Group C – Distilled Water. For CS evaluation, eighteen cylindrical samples of each material were prepared, immersed in NaOCl, and similarly subdivided into three groups based on the irrigant used. All samples were tested using a universal testing machine. Results: Biodentine showed no significant difference in POBS among the irrigants (p=0.065). Bio-C Repair showed significantly higher POBS with MA and distilled water than with EDTA (p<0.001). Biodentine’s CS was significantly affected by the chelating agents (Control > EDTA > MA), whereas Bio-C Repair showed no significant difference; however, its CS remained lower than that of Biodentine. Conclusion: Chelating agents did not affect Biodentine's POBS, whereas MA improved Bio-C Repair's POBS over EDTA. Despite the reduction, Biodentine's CS remained higher than Bio-C Repair.