Fracture Resistance of Fiber-Reinforced vs. Conventional Resin Composite Restorations in Structurally Compromised Molars: An In Vitro Study.

The aim of this study was to evaluate reinforcing effect of different fiber-reinforced resin composites for restoring structurally compromised molars compared to conventional resin composite. Sixty healthy human third molars were randomly divided into six groups ( = 10). In G1 to G4, wide mesio-occluso-distal (MOD) cavities with an occlusal depth of 4 mm and proximal boxes with a width of 2/3 of buccolingual distance were prepared.