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

Detalhes bibliográficos
Autor(a) principal: Rêgo, Emanuel Braga
Data de Publicação: 2007
Outros Autores: Romano, Fábio Lourenço
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: https://www.revistas.usp.br/jaos/article/view/3502
Resumo: The 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°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.
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spelling Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times Visible lightOrthodontic bracketsShear strength The 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°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. Universidade de São Paulo. Faculdade de Odontologia de Bauru2007-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/350210.1590/S1678-77572007000500007Journal of Applied Oral Science; Vol. 15 No. 5 (2007); 412-415 Journal of Applied Oral Science; Vol. 15 Núm. 5 (2007); 412-415 Journal of Applied Oral Science; v. 15 n. 5 (2007); 412-415 1678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/3502/4192Copyright (c) 2007 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessRêgo, Emanuel BragaRomano, Fábio Lourenço2012-04-27T11:58:50Zoai:revistas.usp.br:article/3502Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2012-04-27T11:58:50Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
title Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
spellingShingle Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
Rêgo, Emanuel Braga
Visible light
Orthodontic brackets
Shear strength
title_short Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
title_full Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
title_fullStr Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
title_full_unstemmed Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
title_sort Shear bond strength of metallic brackets photo-activated with light-emitting diode (LED) at different exposure times
author Rêgo, Emanuel Braga
author_facet Rêgo, Emanuel Braga
Romano, Fábio Lourenço
author_role author
author2 Romano, Fábio Lourenço
author2_role author
dc.contributor.author.fl_str_mv Rêgo, Emanuel Braga
Romano, Fábio Lourenço
dc.subject.por.fl_str_mv Visible light
Orthodontic brackets
Shear strength
topic Visible light
Orthodontic brackets
Shear strength
description The 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°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.
publishDate 2007
dc.date.none.fl_str_mv 2007-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/jaos/article/view/3502
10.1590/S1678-77572007000500007
url https://www.revistas.usp.br/jaos/article/view/3502
identifier_str_mv 10.1590/S1678-77572007000500007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/jaos/article/view/3502/4192
dc.rights.driver.fl_str_mv Copyright (c) 2007 Journal of Applied Oral Science
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2007 Journal of Applied Oral Science
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
publisher.none.fl_str_mv Universidade de São Paulo. Faculdade de Odontologia de Bauru
dc.source.none.fl_str_mv Journal of Applied Oral Science; Vol. 15 No. 5 (2007); 412-415
Journal of Applied Oral Science; Vol. 15 Núm. 5 (2007); 412-415
Journal of Applied Oral Science; v. 15 n. 5 (2007); 412-415
1678-7765
1678-7757
reponame:Journal of applied oral science (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Journal of applied oral science (Online)
collection Journal of applied oral science (Online)
repository.name.fl_str_mv Journal of applied oral science (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||jaos@usp.br
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