Shafiei F, et al. - This inquiry was pursued to investigate the impact of applying four different liners under short fiber-reinforced composite (SFRC), everX Posterior, compared to conventional composite resin, Z250, on their strengthening property in premolar mesio-occluso-distal (MOD) cavities. Researchers concluded that four liners can be used without interfering with the higher efficacy of SFRC vs conventional composite resins to improve the fracture strength of premolar MOD cavities.