in vitro effect of luting cement on fracture resistance of primary maxillary central incisors with fiber posts

Objectives: the use of fiber posts in endodontically treated primary maxillary central incisors improves the retention of composite resin restorations. the purpose of this study was to evaluate the effect of 4 different luting cements on fracture resistance of primary maxillary central incisors with fiber posts.materials and methods: in this in vitro study, 40 primary maxillary central incisors were endodontically treated and obturated with metapex. they were then randomly divided into four groups (n=10) for cementation of fiber posts with gc fuji i glass ionomer luting cement, panavia f2.0 dual-cure luting cement, panavia sa luting plus cement (self-adhesive), and totalcem self-adhesive cement. after 1000 thermal cycles, the fracture resistance was measured. data were statistically analyzed using anova (alpha=0.05).results: the mean fracture resistance was 267.07±130.01n in totalcem, 257.27±102.56n in panavia f2.0 dual-cure cement, 227.82±110.40n in panavia sa luting plus self-adhesive cement, and 220.89±59.96n in gc fuji i glass ionomer group. there was no statistically significant difference in fracture resistance among the four groups (p=0.714).  conclusion: type of luting cement had no significant effect on fracture resistance of primary maxillary central incisors with fiber posts. nonetheless, totalcem yielded the highest fracture resistance. considering its self-adhesive property and easy workability, it can be a good option for cementation of fiber posts in endodontically treated primary central incisors.