Evaluation of mechanical properties of Z250 composite resin light-cured by different methods
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
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/3314 |
Resumo: | This study evaluated some mechanical parameters of Z250 composite resin using different light-curing methods. Ten specimens were prepared for each mechanical test group with different dimensions according to the test. Light-curing was performed by: a). continuous light (800mW/cm²-40s); b). exponential light (0-800mW/cm²-40s); c). intermittent light (2s-600mW/cm²; 2s without light-80s); d). stepped light (10s-150mW/cm²; 30s-650mW/cm²); e). PAC (1320mW/cm²-3s); f). LED (350mW/cm²-40s). After 24 ± 1 h, the specimens were loaded at a crosshead speed of 0.5 mm/min until fracture. The mechanical properties were calculated and analyzed by ANOVA and Tukey test (5%). The results showed that the highest compressive strength values were found for the continuous, exponential, intermittent and stepped light methods, whereas PAC and LED obtained the lowest values. LED, stepped light, PAC, exponential and continuous light presented the highest values for diametral tensile strength. The intermittent light showed the lowest value, which was significantly lower than the value obtained for LED only. Flexural strength results were not significantly different between all light-curing methods. Finally, the highest modulus of elasticity values were obtained for LED, exponential, continuous and intermittent light, whereas PAC and stepped light showed the lowest values. The mechanical properties were affected by light-curing methods employed. |
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Journal of applied oral science (Online) |
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Evaluation of mechanical properties of Z250 composite resin light-cured by different methods Avaliação de propriedades mecânicas da resina composta Z250 fotoativada com diferentes métodos Resinas compostasFotoativaçãoResistência à compressãoTração diametralFlexãoMódulo de elasticidadeComposite resinsLight-curing methodsCompressive strengthDiametral tensile strengthFlexural strengthModulus of elasticity This study evaluated some mechanical parameters of Z250 composite resin using different light-curing methods. Ten specimens were prepared for each mechanical test group with different dimensions according to the test. Light-curing was performed by: a). continuous light (800mW/cm²-40s); b). exponential light (0-800mW/cm²-40s); c). intermittent light (2s-600mW/cm²; 2s without light-80s); d). stepped light (10s-150mW/cm²; 30s-650mW/cm²); e). PAC (1320mW/cm²-3s); f). LED (350mW/cm²-40s). After 24 ± 1 h, the specimens were loaded at a crosshead speed of 0.5 mm/min until fracture. The mechanical properties were calculated and analyzed by ANOVA and Tukey test (5%). The results showed that the highest compressive strength values were found for the continuous, exponential, intermittent and stepped light methods, whereas PAC and LED obtained the lowest values. LED, stepped light, PAC, exponential and continuous light presented the highest values for diametral tensile strength. The intermittent light showed the lowest value, which was significantly lower than the value obtained for LED only. Flexural strength results were not significantly different between all light-curing methods. Finally, the highest modulus of elasticity values were obtained for LED, exponential, continuous and intermittent light, whereas PAC and stepped light showed the lowest values. The mechanical properties were affected by light-curing methods employed. Este estudo avaliou algumas propriedades mecânicas da resina composta Z250 usando diferentes métodos de fotoativação. Dez amostras foram preparadas para cada grupo, com diferentes dimensões de acordo com o ensaio. Os métodos de fotoativação foram: a) luz contínua (800mW/cm²-40s); b) luz exponencial (0-800mW/cm²-40s); c) luz intermitente (2s-600mW/cm²; 2s sem luz-80s); d) dupla intensidade (10s-150mW/cm²; 30s-650mW/cm²); e) PAC (1320mW/cm²-3s); f) LED (350mW/cm²-40s). Após 24 ± 1 h, as amostras foram carregadas até fraturar (v=0,5 mm/min.). As propriedades mecânicas foram calculadas e os dados analisados estatisticamente (ANOVA e teste de Tukey 5%). Os resultados mostraram que, para resistência à compressão, os maiores valores foram encontrados com os métodos luz contínua, intermitente, exponencial e dupla intensidade, enquanto que PAC e LED obtiveram os menores valores. Os métodos LED, PAC, luz contínua, exponencial e dupla intensidade, mostraram os maiores valores para resistência à tração diametral, enquanto luz intermitente mostrou os menores valores, que diferiram apenas do LED. Para a resistência flexural, não houve diferença entre os métodos. Já, para o módulo de elasticidade, os maiores valores foram obtidos com LED, luz exponencial, contínua e intermitente, enquanto que PAC e dupla intensidade mostraram os menores valores. As propriedades mecânicas podem ser afetadas pelo método de fotativação utilizado. Universidade de São Paulo. Faculdade de Odontologia de Bauru2005-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/331410.1590/S1678-77572005000400015Journal of Applied Oral Science; Vol. 13 No. 4 (2005); 393-398 Journal of Applied Oral Science; Vol. 13 Núm. 4 (2005); 393-398 Journal of Applied Oral Science; v. 13 n. 4 (2005); 393-398 1678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/3314/4004Copyright (c) 2005 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessObici, Andresa CarlaSinhoreti, Mário Alexandre CoelhoCorrer-Sobrinho, LourençoGóes, Mário Fernando deConsani, Simonides2012-04-27T11:52:00Zoai:revistas.usp.br:article/3314Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2012-04-27T11:52Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods Avaliação de propriedades mecânicas da resina composta Z250 fotoativada com diferentes métodos |
title |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
spellingShingle |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods Obici, Andresa Carla Resinas compostas Fotoativação Resistência à compressão Tração diametral Flexão Módulo de elasticidade Composite resins Light-curing methods Compressive strength Diametral tensile strength Flexural strength Modulus of elasticity |
title_short |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
title_full |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
title_fullStr |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
title_full_unstemmed |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
title_sort |
Evaluation of mechanical properties of Z250 composite resin light-cured by different methods |
author |
Obici, Andresa Carla |
author_facet |
Obici, Andresa Carla Sinhoreti, Mário Alexandre Coelho Correr-Sobrinho, Lourenço Góes, Mário Fernando de Consani, Simonides |
author_role |
author |
author2 |
Sinhoreti, Mário Alexandre Coelho Correr-Sobrinho, Lourenço Góes, Mário Fernando de Consani, Simonides |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Obici, Andresa Carla Sinhoreti, Mário Alexandre Coelho Correr-Sobrinho, Lourenço Góes, Mário Fernando de Consani, Simonides |
dc.subject.por.fl_str_mv |
Resinas compostas Fotoativação Resistência à compressão Tração diametral Flexão Módulo de elasticidade Composite resins Light-curing methods Compressive strength Diametral tensile strength Flexural strength Modulus of elasticity |
topic |
Resinas compostas Fotoativação Resistência à compressão Tração diametral Flexão Módulo de elasticidade Composite resins Light-curing methods Compressive strength Diametral tensile strength Flexural strength Modulus of elasticity |
description |
This study evaluated some mechanical parameters of Z250 composite resin using different light-curing methods. Ten specimens were prepared for each mechanical test group with different dimensions according to the test. Light-curing was performed by: a). continuous light (800mW/cm²-40s); b). exponential light (0-800mW/cm²-40s); c). intermittent light (2s-600mW/cm²; 2s without light-80s); d). stepped light (10s-150mW/cm²; 30s-650mW/cm²); e). PAC (1320mW/cm²-3s); f). LED (350mW/cm²-40s). After 24 ± 1 h, the specimens were loaded at a crosshead speed of 0.5 mm/min until fracture. The mechanical properties were calculated and analyzed by ANOVA and Tukey test (5%). The results showed that the highest compressive strength values were found for the continuous, exponential, intermittent and stepped light methods, whereas PAC and LED obtained the lowest values. LED, stepped light, PAC, exponential and continuous light presented the highest values for diametral tensile strength. The intermittent light showed the lowest value, which was significantly lower than the value obtained for LED only. Flexural strength results were not significantly different between all light-curing methods. Finally, the highest modulus of elasticity values were obtained for LED, exponential, continuous and intermittent light, whereas PAC and stepped light showed the lowest values. The mechanical properties were affected by light-curing methods employed. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-12-01 |
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/3314 10.1590/S1678-77572005000400015 |
url |
https://www.revistas.usp.br/jaos/article/view/3314 |
identifier_str_mv |
10.1590/S1678-77572005000400015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/3314/4004 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2005 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2005 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. 13 No. 4 (2005); 393-398 Journal of Applied Oral Science; Vol. 13 Núm. 4 (2005); 393-398 Journal of Applied Oral Science; v. 13 n. 4 (2005); 393-398 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 |
_version_ |
1800221672140177408 |