Comparison of fracture resistance of immature sheep teeth using pozzolan MTA-based sealer

The aim of this study was to evaluate the influence of pozzolan sealers used for apexification in immature permanent teeth on the root fragility using a performance simulation in sheep teeth in vitro. The fracture resistance of 125 incisor teeth from 38 domestic sheep was evaluated by filling the root canals with AH Plus, ProRoot MTA, and the Biodentine and Pozzolan MTA-based materials EndoSeal MTA and Endocem MTA after performing immature, permanent tooth simulations. The highest fracture resistance was obtained in a negative control group where no treatment was administered. The lowest resistance was found in a positive control group where no canal filling was performed. A significant difference between these groups was found (p < 0.001). The median fracture value of the AH Plus experimental group (934.14 + 95.38 Newtons (N)) was higher than both the Endocem MTA (893.87 +125.41 N) and the EndoSeal MTA groups (869.08 + 91.49 N). However, the differences between these groups were not statistically significant (p > 0.05). The results of the simulations indicate that the Pozzolan MTA-based EndoSeal MTA and Endocem MTA increase the fracture resistance of immature permanent teeth.