title: Evaluation of a dual peak third generation LED curing light.
abstract: This study compared 3 light-emitting diode curing lights (UltraLume 5, FreeLight 2, LEDemetron I) with a quartz-tungsten-halogen light (Optilux 401) to determine which was the better at photopolymerizing 5 resin composites. The composites were 2 mm thick and were irradiated for the manufacturers' recommended curing times at distances of 2 mm and 8 mm from the light guide. The Knoop hardness at each of 22 points over a 10-mm diameter footprint at the top and bottom of the composites was used to compare the lights. The 4 curing lights and irradiation distances did not have the same effect on all the composites (P < .001). It was concluded that overall the UltraLume 5 dual peak third generation LED curing light was able to polymerize these 5 resin composites as well as or better than the other curing lights.
authors.affiliation: Department of Dental Clinical Sciences, Dalhousie University, Halifax, Nova Scotia, Canada.
authors.forename: Richard B T
authors.initials: RB
authors.lastname: Price
authors.forename: Corey A
authors.initials: CA
authors.lastname: Felix
authors.forename: Pantelis
authors.initials: P
authors.lastname: Andreou
mesh_terms: D003188:Composite Resins / Q000528:radiation effects*; D003748:Dental Equipment; D006219:Halogens; D006244:Hardness; D008027:Light; D044367:Phase Transition; D012666:Semiconductors; D013674:Technology, Dental / Q000295:instrumentation*
chemical_list: D003188:Composite Resins; D006219:Halogens