Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times

dc.creatorRego, EB
dc.creatorRomano, FL
dc.date2007
dc.dateSEP-OCT
dc.date2014-11-19T12:22:05Z
dc.date2015-11-26T17:05:50Z
dc.date2014-11-19T12:22:05Z
dc.date2015-11-26T17:05:50Z
dc.date.accessioned2018-03-28T23:54:13Z
dc.date.available2018-03-28T23:54:13Z
dc.identifierJournal Of Applied Oral Science. Univ Sao Paulo Fac Odontologia Bauru, v. 15, n. 5, n. 412, n. 415, 2007.
dc.identifier1678-7757
dc.identifierWOS:000256794600006
dc.identifier10.1590/S1678-77572007000500007
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75493
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75493
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75493
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1279690
dc.descriptionThe purpose of this study was to compare the shear bond strength of orthodontic metallic brackets photo-activated with two different light-curing sources at different exposure times: halogen light (XL 1500, 3M ESPE) and LED light (Ortholux, 3M Unitek). Sixty bovine permanent lower incisors were inserted into PVC tubes containing plaster. The buccal surfaces were cleaned with pumice and water, and then etched with 37% phosphoric acid gel. The XT Primer bonding agent (3M Unitek) was applied to the enamel surfaces and the metallic pre-coated brackets (Transbond APC II system, 3M Unitek) were attached to upper central incisors. The teeth were randomly divided into four groups (n=15). In Group I (Control), halogen light was used for 40 seconds, while in Groups II, III, and IV were light-cured with LED light unit for 40, 10, and 5 seconds, respectively. The teeth were stored in distilled water at. 37 degrees C for 24 hours. The brackets were submitted to shear bond strength test in universal testing machine (Instron) at a crosshead speed of 0.5 mm/minute. Shear bond strength means (MPa) were 4.87 for Group I; 5.89 for Group II; 4.83 for Group III, and 4.39 for Group IV. Tukey's test detected no statistically significant differences among the groups regarding the shear bond strength (p>0.05). Neither of the types of light-curing sources or exposure times influenced the shear bond strength of metallic brackets.
dc.description15
dc.description5
dc.description412
dc.description415
dc.languageen
dc.publisherUniv Sao Paulo Fac Odontologia Bauru
dc.publisherBauru-sp
dc.publisherBrasil
dc.relationJournal Of Applied Oral Science
dc.relationJ. Appl. Oral Sci.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectvisible light
dc.subjectorthodontic brackets
dc.subjectshear strength
dc.subjectOrthodontic Brackets
dc.subjectCuring Units
dc.subjectPlasma-arc
dc.subjectPolymerization
dc.subjectComposite
dc.subjectHalogen
dc.titleShear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
dc.typeArtículos de revistas


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