C-R® Hybrid self-cure composite is easy to use. It mixes smoothly on a pad and flows through all standard C-R® syringe tips (will not flow through NeedleTubes™). Like all self-cure composites, C-R® Hybrid cures from the bottom up. This creates less stress in the restoration than a light-activated resin. C-R® Hybrid is indicated as a base component for deep cavities and in all other areas where a self-cure hybrid resin is indicated