title: Strength properties of visible-light-cured resin-modified glass-ionomer cements.
abstract: A new generation of glass ionomers containing polymerizable methacrylate monomers and/or prepolymers are now available for use as direct esthetic restorative materials. Proper clinical application of these new resin-modified glass ionomers requires an understanding of their benefits and limitations. The purpose of this investigation was to compare the compressive and diametral tensile strength at 1 hour, 24 hours, and 7 days of three visible-light-cured glass-ionomer cements, a polyacid-modified composite resin, and a composite resin core build-up material under both light-cure and dark-cure conditions. Statistical analysis indicated significant differences between several of the cements tested for both compressive and diametral tensile strengths at all three testing times (P > 0.05). Prosthodent composite resin and Vitremer tricure visible-light-cured glass-ionomer cement are significantly greater in both compressive and diametral tensile strength than any of the other materials tested after 7 days.
authors.affiliation: Ohio State University, College of Dentistry, Department of Restorative Dentistry, Prosthodontics and Endodontics, Columbus 43210-1241, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Kerby
authors.forename: L
authors.initials: L
authors.lastname: Knobloch
authors.forename: A
authors.initials: A
authors.lastname: Thakur
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D019245:Compressive Strength; D005899:Glass Ionomer Cements / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D011108:Polymers / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D013718:Tensile Strength
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; C081144:Photac-Fil; D011108:Polymers; D019279:Resin Cements; D012117:Resins, Synthetic; C081982:VariGlass VLC; C084550:Vitremer; C110710:prosthodont