Although the majority of the studies reported that the use of root canal sealers increased the fracture resistance of endodontically treated teeth , conflicting evidence was found for the reinforcing effect of resin , glass ionomer , and calcium silicate-based sealers while there was moderate evidence for zinc oxide eugenol-based sealers in favor of no reinforcing effect .
Conclusion On the basis of available evidence , the use of root canal sealer increases the fracture resistance of endodontically treated teeth .
Regarding the comparisons among the sealers , no conclusions could be drawn for the superiority of one sealer type to another .
Objective The purpose of this study was to systematic ally review and critically analyze the published data of in vitro studies testing the effect of root canal sealers on the fracture resistance of endodontically treated teeth .
Fracture resistance of roots endodontically treated with a new resin filling material.
BACKGROUND The authors evaluated the fracture resistance of endodontically treated teeth filled with either gutta-percha or a new resin-based obturation material .  METHODS The authors prepared and r and omly divided 80 single-canal extracted teeth into five groups : lateral and vertical condensation with gutta-percha , lateral and vertical condensation with the new resin-based obturation material , and a control group with no filling material . The specimens were stored in 100 percent humidity for two weeks , mounted in polyester resin and loaded to failure . RESULTS The authors found statistically significant differences among the experimental groups ( P < .05 ) . The groups with the new material displayed higher mean fracture loads and the gutta-percha groups lower mean fracture load values than the control unfilled group . However , the differences were not significant . The groups with the new material displayed significantly higher mean fracture loads than gutta-percha groups independent of the filling technique used . CONCLUSIONS Filling the canals with the new resin-based obturation material increased the in vitro resistance to fracture of endodontically treated single-canal extracted teeth when compared with st and ard gutta-percha techniques . CLINICAL IMPLICATION S ; If other properties of the new resin-based obturation material compare favorably with those of gutta-percha for filling the root canal , it should be considered as a replacement for gutta-percha , as the results of this study indicate that it could provide enhanced resistance to tooth fracture
Although the majority of the studies reported that the use of root canal sealers increased the fracture resistance of endodontically treated teeth , conflicting evidence was found for the reinforcing effect of resin , glass ionomer , and calcium silicate-based sealers while there was moderate evidence for zinc oxide eugenol-based sealers in favor of no reinforcing effect .
Conclusion On the basis of available evidence , the use of root canal sealer increases the fracture resistance of endodontically treated teeth .
Regarding the comparisons among the sealers , no conclusions could be drawn for the superiority of one sealer type to another .
Objective The purpose of this study was to systematic ally review and critically analyze the published data of in vitro studies testing the effect of root canal sealers on the fracture resistance of endodontically treated teeth .