Most Pit and fissure sealants are based on

The most common sealants are based on bisphenol A-glycidyl methacrylate (Bis-GMA) resin and are light-cured, although some self-cured products are also available. The viscous Bis-GMA resin is mixed with a diluent, such as triethylene glycol dimethacrylate, to produce a reasonably low-viscosity, flowable resin. Craig Ed 14th P:123