GC everX Posterior is a fibre-reinforced composite designed to be used as dentine replacement, in conjunction with conventional a composite such as G-ænial Posterior used as enamel replacement. The short fibres of GC everX Posterior will make it a perfect sub-structure to reinforce any composite restoration in large size cavities. Fibres will also prevent and stop crack propagation through the filling, which is considered to be the main cause of composite failures. Thanks to its unique properties, GC everX Posterior opens new possibilities for restorations of extensive cavities at chairside and is the answer to the growing demand for an economic restorative alternative for big size cavities.