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 .
Influence of root embedment material and periodontal ligament simulation on fracture resistance tests.
The aim of this study was to evaluate the influence of the embedment material and periodontal ligament simulation on fracture resistance of bovine teeth . Eighty bovine incisor teeth were r and omized into 8 groups ( n = 10 ) , embedded in acrylic or polystyrene resin using 4 types of periodontal ligament simulation : 1 - -absence of the ligament ; 2 - -polyether impression material ; 3 - -polysulfide impression material ; 4 - -polyurethane elastomeric material . The specimens were stored at 370C and 100 % humidity for 24 hours . Specimens were su bmi tted to tangential load on the palatal surface at 0.5 mm/minute crosshead speed until fracture . The fracture modes were analyzed as follows : 1 - -coronal fracture ; 2 - -cemento-enamel junction fracture ; 3 - -partial root fracture ; 4 - -total root fracture . Statistical analyses by two-way ANOVA and Tukey 's test were applied ( p < 0.05 ) . The results showed that root embedment method and periodontal ligament simulation have a significant effect on fracture resistance . Artificial periodontal ligament modified the fracture modes
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 .