Assessment of luxacore, photo core, and core max II on fracture resistance of endodontically treated teeth restored with paraposts and fiber-reinforced composite posts

Objectives: The objective is to evaluate the efficacy of LuxaCore, Photo Core, and Core Max II on fracture resistance of endodontically treated teeth restored with ParaPosts and fiber-reinforced composite (FRC) posts. Materials and Methods: Ninety extracted mandibular first premolar teeth were randomly grouped into nine different groups with ten samples in each. I-FRC posts, II-FRC with Photo Core, III-FRC with LuxaCore, IV-FRC with composite core, V-FRC with Core Max II, VI-para Post (PP), VII-PP with Luxa core, VIII-PP with photo Core, IX-PP with Core Max II were compared for fracture resistance. Results: The mean fracture resistance (Newton) in group I was 452 +/- 61.5, in group II was 412.6 +/- 42.4 (higher from group I to group V), and lower in group VI to group IX (288 to 246.5).The mean fracture resistance of group II to V was 380.1 +/- 72.1 and group VI to IX was 62.8 +/- 70.6. The difference was statistically significant (0.001). Conclusion: FRC posts exhibited higher fracture resistance as compared to ParaPosts, and fracture resistance was not dependent on the type of material used.