Aim: The aim of this in-vitro study was to evaluate and compare the fracture resistance of endodontically treated teeth restored with three different types of fibre-reinforced composite post systems using two different types of luting cements. Settings and Design: This was an in vitro study. Materials and Method: Ninety extracted intact human maxillary central incisor teeth were selected for the study. All the teeth were decoronated 2 mm above the cemento-enamel junction, root canal treatment was performed, post space was prepared and the samples were divided into 3 groups (n= 30); Group 1: prefabricated glass fibre post (Reforpost), Group 2: customized polyethylene woven fibre post (Ribbond) and Group 3: customized Everstick post (GC). Two types of luting cements, dual cure resin cement Paracore (COLTENE) and self-etch/self-adhesive resin cement Maxcem Elite (KERR) were used for post cementation. The core was standardized to 4mm. Prepared samples were subjected to compressive load of 5mm/min at 135o anguation using an universal testing machine. The load at which fracture occurred was analysed statistically by one way ANOVA and post-hoc tukey test. Result: The findings showed statistically significant difference between failure loads. Group 3 showed highest mean fracture resistance value (54.77±1.65 Kgf), followed by group 1 (Reforpost) with mean value (42.47±2.24 Kgf) and group 2 (Ribbond) with mean value (24.12±1.91 Kgf ). Conclusion: Teeth restored with Everstick post showed highest mean fracture resistance value regardless of luting agent.
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