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dc.titleKnoop Hardness Of Composites Cured With Halogen And Led Lightcuring Units In Class I Restorationsen
dc.title.alternativeKnoop Hardness Of Composites Cured With Halogen And Led Lightcuring Units In Class I Restorationspt_BR
dc.contributor.authorMaria Cecília C. Giorgipt_BR
dc.contributor.authorMaria Cecília C. Giorgipt_BR
dc.contributor.authorLuís Alexandre Maffei Sartini Paulillopt_BR
unicamp.authorMaria Cecília C. Giorgi - Universidade Estadual de Campinas (Unicamp), Maria Cecília C. Giorgi - Universidade Estadual de Campinas (Unicamp), Luís Alexandre Maffei Sartini Paulillo - Universidade Estadual de Campinas (Unicamp)pt_BR
dc.subjectComposite Resinsen
dc.description.abstractAim: To evaluate the effect of light-curing units (LCUs) on the microhardness of class I composite restorations at different depths. Methods: Two light emitting diodes (LED) (Freelight 2, Radii) and one halogen (Optilux 501) LCUs were evaluated. Thirty class I cavities prepared in human third molars were restored with a microhybrid (Charisma) and a microfilled (Renamel) resin composite. After seven days of water storage, the teeth were decoronated and the crowns were bisected mesiodistally and tested for microhardness under a 25 g load for 20 seconds. Fifteen indentations were performed at three depths for each half-crown. Results: Charisma presented significantly higher Knoop hardness number (KHN) values than Renamel. At the superficial depth, there were no statistically significant differences (p > 0.05) when Charisma was cured with both LED curing units. However, statistically significant difference (p < 0.05) was found when Charisma was light-cured with the halogen LCU. The lowest KHN value was obtained by Renamel light-cured with both LED LCUs, regardless of the composite. Nevertheless, when the microfilled composite was light-cured with the halogen LCU, hardness was significantly higher compared to those cured with LED units at all evaluated depths. Conclusions: The effectiveness of polymerization is related not only to the light-curing source, but also to the type of composite and the curing depth.en
dc.relation.ispartofBrazilian Journal of Oral Sciencespt_BR
dc.identifier.citationBrazilian Journal of Oral Sciences, v. 8, n. 1, p. 30-33pt_BR
dc.description.provenanceMade available in DSpace on 2017-09-12T14:31:18Z (GMT). No. of bitstreams: 1 ppec_8642325.pdf: 466866 bytes, checksum: b0c91f94d220665eca199624edcc9786 (MD5) Previous issue date: 2009en
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