title: Effects of postcuring and water sorption on the mechanical properties of composite dental restorative materials.
abstract: Four commercial dental restorative composites with different filler contents, were tested for the effects of postcuring and water sorption on elastic modulus, compressive strength and ultimate strain. Large variations in mechanical properties were seen; water sorption plasticizes the matrix, causing loss of low molecular weight substances.
mesh_terms: D000180:Acrylic Resins; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003764:Dental Materials; D003793:Dental Restoration, Permanent; D014867:Water
chemical_list: D000180:Acrylic Resins; D003764:Dental Materials; D014867:Water