Dental compositions containing bis-GMA as basic material, multifunctional methacrylates, inorganic filler and photoinitiator were used as a model for dental applications. The main problem in the application and UV-Vis curing process is the shrinkage of dental materials. Total shrinkage of UV-Vis curable dental composites is due to polymerization shrinkage, which is a typical behavior of multifunctional methacrylates during the polymerization process. The important factors for curing dental composites are: kind and concentration of used methacrylates, their functionality, double bond concentration, kind and concentration of added photoinitiator and UV-Vis dose. UV-curable dental compositions based on 2,2-bis-[4-(2-hydroxy-3-methacryloyloxypropyl) phenyl] propane (bis-GMA) containing multifunctional monomers such as 1,3-butanediol dimethacrylate (1,3-BDDMA), diethylene glycol dimethacrylate (DEGDMA), tetraethylene glycol dimethacrylate (T3EGDMA), trimethylolpropane trimethacrylate (TMPTMA), polyethylene glycol 200 dimethacrylate (PEG200DA) were investigated. Reduction of polymerization shrinkage of dental compositions is at the moment a major problem for dental technology.