title: Physical and mechanical properties of anterior and posterior composite restorative materials.
abstract: The physical and mechanical properties of two photo-cured anterior filling materials and a photo-cured posterior filling material have been compared with those of a conventional-cure resin composite. The properties of these materials were found to be dependent on their matrix resin compositions, filler contents, and filler particle sizes. One material with a low (50%) inorganic filler content of small particle size (0.04 micron) was found to have a lower mechanical strength with significantly higher water sorption and solubility characteristics than more heavily filled materials. A new hybrid photo-cured anterior composite with a smaller filler particle size was found to have comparable sorption and solubility behavior but a tensile strength superior to that of a conventional-cure composite. The superior properties of the new photo-cured systems are thought to result from their hybrid composite structures and the smaller filler particle sizes.
authors.forename: J A
authors.initials: JA
authors.lastname: von Fraunhofer
authors.forename: P
authors.initials: P
authors.lastname: Curtis
mesh_terms: D003188:Composite Resins; D003793:Dental Restoration, Permanent; D003799:Dental Stress Analysis; D008422:Materials Testing
chemical_list: D003188:Composite Resins