<prompt> Polymerization shrinkage by volume was overcome by adding:FillersCoupling agentsTEGDMAAll of the above  <response>: Advantages of adding fillers:Reduces the coefficient of thermal expansionReduces polymerization shrinkageIncreases abrasion resistanceDecreases water sorptionIncreases tensile and compressive strengthsIncreases fracture toughnessIncreases flexure modulusProvides radiopacityImproves handling propertiesIncreases translucencyRef: Textbook of Operative Dentistry, Nisha and Amit Garg, 3rd edition, Pg no:253 