title: Effect of led light curing on the marginal sealing of composite resin restorations.
abstract: Light-emitting diode (LED) curing units are becoming increasingly popular; however, questions remain about their ability to adequately polymerize composite resins. This study was conducted to evaluate the marginal seal of restorations placed with a tungsten halogen curing unit compared to three LED curing units through a microleakage test. The results did not indicate statistical differences between the groups tested for both enamel and dentin margins. Variation of the light-curing unit (quartz tungsten halogen or LED) did not result in discernible differences in the marginal sealing of composite restorations.
authors.affiliation: Department of Operative Dentistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil. luis_sensi@hotmail.com
authors.forename: Luis Guilherme
authors.initials: LG
authors.lastname: Sensi
authors.forename: Sylvio Monteiro
authors.initials: SM
authors.lastname: Junior
authors.forename: Luiz Narciso
authors.initials: LN
authors.lastname: Baratieri
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000528:radiation effects; D003188:Composite Resins / Q000528:radiation effects*; D003748:Dental Equipment; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D006219:Halogens; D006244:Hardness; D006801:Humans; D008027:Light; D008964:Molar, Third; D044367:Phase Transition; D019279:Resin Cements / Q000528:radiation effects; D012666:Semiconductors
chemical_list: D003188:Composite Resins; C444701:Filtek Z250; D006219:Halogens; D019279:Resin Cements; C115612:single bond; D017438:Bisphenol A-Glycidyl Methacrylate