title: Physical properties and repair bond strength of direct and indirect composite resins.
abstract: Use of composite resins now includes indirect curing methods. Surface chemistry, repair bond strength, plus location of failure and five physical properties of two direct and three indirect composite resins were determined. There were statistically significant differences in flexural strength of materials and in hardness values. Repair bond strength failures were not significantly different; failures occurred primarily at the interface. Multiple internal reflection spectroscopy confirmed the presence of unpolymerized material after cure in all products. Indirect cure of the direct composite resin increased the degree of cure.
authors.affiliation: Department of Cariology and General Dentistry, School of Dentistry, University of Michigan, Ann Arbor.
authors.forename: W A
authors.initials: WA
authors.lastname: Gregory
authors.forename: S
authors.initials: S
authors.lastname: Berry
authors.forename: E
authors.initials: E
authors.lastname: Duke
authors.forename: J B
authors.initials: JB
authors.lastname: Dennison
mesh_terms: D000042:Absorption; D000180:Acrylic Resins / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D004548:Elasticity; D006244:Hardness; D008422:Materials Testing; D008689:Methacrylates; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements; D012821:Silanes; D012995:Solubility; D013055:Spectrophotometry, Infrared; D013718:Tensile Strength
chemical_list: D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; C069352:Concept resin; D008689:Methacrylates; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C046981:ESPE Visio-Gem; C065770:Herculite XR; D017438:Bisphenol A-Glycidyl Methacrylate; C057365:Dentacolor