Effect of using biodentine(BD) and mineral trioxide aggregate (MTA) as a pulp space barrier for regenerative endodontic procedures on the fracture resistance of simulated teeth with i̇mmature roots

Effect of Using Biodentine(BD) and Mineral Trioxide Aggregate (MTA) as a Pulp Space Barrier For Regenerative Endodontic Procedures on the Fracture Resistance of Simulated Teeth With İmmature Roots. Aim: The purpose of this study was to evaluate the long-term fracture resistance of simulated immature teeth filled with Biodentine (BD) and mineral trioxide aggregate (MTA) as pulp space barriers for regenerative endodontic procedures (REPs) Materials and Methods: Eighty extracted human maxillary anterior teeth were divided into four groups of 20 teeth each. Positive control teeth received no treatment. The remaining teeth were prepared until a size 6 Peeso (1.7 mm) could be passed 1 mm beyond the apex. The root canals were irrigated and disinfected according to AAE considerations for REPs. The canals were filled with either BD or MTA to approximately 3 mm below the CEJ. The negative control canals were left unfilled. The coronal access cavities were restored with glass ionomer followed by composite resin. The teeth were placed in phosphate-buffered saline solution and stored for 3 months. Each specimen was then subjected to fracture testing using a universal testing machine. The peak load to fracture and the fracture resistance were recorded, and the data were analysed statistically. Results: The positive control group had the highest fracture resistance and differed significantly (P<0.05) from the other experimental groups. No significant difference was found between BD and MTA (P>0.05). Conclusions: Considering the risk of cervical root fracture for pulpless infected immature teeth treated with REPs, there was no difference between MTA and BD regarding the resistance to root fracture. Key Words: Biodentine; fracture; immature teeth; regenerative endodontics; trauma