Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements
Autor(a) principal: | |
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Data de Publicação: | 2010 |
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/3848 |
Resumo: | Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alterations seem to depend on their composition. OBJECTIVE: To determine the influence of P/L ratio on the radiodensity and diametral tensile strength (DTS) of glass ionomer cements. MATERIAL AND METHODS: There were 2 factors under study: P/L ratio (manufacturer's recommended P/L ratio and a 50% reduced P/L ratio), and materials (Vitro Molar, Vitro Fil, Vitro Cem conventional GICs and Vitro Fil LC, Ortho Glass LC RMGICs. Five 1-mm-thick samples of each material-P/L ratio were produced for radiodensity evaluation. Samples were x-ray exposed onto Digora phosphor plate and radiodensity was obtained using the software Digora for Windows 2.5 Rev 0. For DTS, five (4.0x8.0 mm) cylinder samples of each material were tested (0.5 mm/min). Data were subjected to one- and two-way ANOVA (5x2) followed by Tukey's HSD test, or Kruskal-Wallis and Dunn's method. For paired comparisons, t-test or Mann-Whitney test were used (α=0.05). RESULTS: There was a significant interaction (P=0.001) for the studied factors (materials vs. P/L ratio). Reduced P/L ratio resulted in significantly lower DTS for the RMGICs, but radiodensity was affected for all materials (P |
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Journal of applied oral science (Online) |
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Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements Tensile strengthGlass ionomer cementsRadiographyMicroscopyelectronscanning Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alterations seem to depend on their composition. OBJECTIVE: To determine the influence of P/L ratio on the radiodensity and diametral tensile strength (DTS) of glass ionomer cements. MATERIAL AND METHODS: There were 2 factors under study: P/L ratio (manufacturer's recommended P/L ratio and a 50% reduced P/L ratio), and materials (Vitro Molar, Vitro Fil, Vitro Cem conventional GICs and Vitro Fil LC, Ortho Glass LC RMGICs. Five 1-mm-thick samples of each material-P/L ratio were produced for radiodensity evaluation. Samples were x-ray exposed onto Digora phosphor plate and radiodensity was obtained using the software Digora for Windows 2.5 Rev 0. For DTS, five (4.0x8.0 mm) cylinder samples of each material were tested (0.5 mm/min). Data were subjected to one- and two-way ANOVA (5x2) followed by Tukey's HSD test, or Kruskal-Wallis and Dunn's method. For paired comparisons, t-test or Mann-Whitney test were used (α=0.05). RESULTS: There was a significant interaction (P=0.001) for the studied factors (materials vs. P/L ratio). Reduced P/L ratio resulted in significantly lower DTS for the RMGICs, but radiodensity was affected for all materials (PUniversidade de São Paulo. Faculdade de Odontologia de Bauru2010-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/384810.1590/S1678-77572010000600008Journal of Applied Oral Science; Vol. 18 No. 6 (2010); 577-584 Journal of Applied Oral Science; Vol. 18 Núm. 6 (2010); 577-584 Journal of Applied Oral Science; v. 18 n. 6 (2010); 577-584 1678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/3848/4538Copyright (c) 2010 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessFonseca, Rodrigo BorgesBranco, Carolina AssafQuagliatto, Paulo SérgioGonçalves, Luciano de SouzaSoares, Carlos JoséCarlo, Hugo LemesCorrer-Sobrinho, Lourenço2012-04-27T12:11:28Zoai:revistas.usp.br:article/3848Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2012-04-27T12:11:28Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
title |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
spellingShingle |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements Fonseca, Rodrigo Borges Tensile strength Glass ionomer cements Radiography Microscopy electron scanning |
title_short |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
title_full |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
title_fullStr |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
title_full_unstemmed |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
title_sort |
Influence of powder/liquid ratio on the radiodensity and diametral tensile strength of glass ionomer cements |
author |
Fonseca, Rodrigo Borges |
author_facet |
Fonseca, Rodrigo Borges Branco, Carolina Assaf Quagliatto, Paulo Sérgio Gonçalves, Luciano de Souza Soares, Carlos José Carlo, Hugo Lemes Correr-Sobrinho, Lourenço |
author_role |
author |
author2 |
Branco, Carolina Assaf Quagliatto, Paulo Sérgio Gonçalves, Luciano de Souza Soares, Carlos José Carlo, Hugo Lemes Correr-Sobrinho, Lourenço |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Fonseca, Rodrigo Borges Branco, Carolina Assaf Quagliatto, Paulo Sérgio Gonçalves, Luciano de Souza Soares, Carlos José Carlo, Hugo Lemes Correr-Sobrinho, Lourenço |
dc.subject.por.fl_str_mv |
Tensile strength Glass ionomer cements Radiography Microscopy electron scanning |
topic |
Tensile strength Glass ionomer cements Radiography Microscopy electron scanning |
description |
Clinicians tend to make reductions in glass ionomer power/liquid (P/L) ratios since some materials are difficult to mix and flow into small cavities, grooves or pits. In general, changing the P/L ratio decreases the physical and mechanical properties of conventional glass ionomer cements (GICs) and resin modified glass ionomer cements (RMGICs), but alterations seem to depend on their composition. OBJECTIVE: To determine the influence of P/L ratio on the radiodensity and diametral tensile strength (DTS) of glass ionomer cements. MATERIAL AND METHODS: There were 2 factors under study: P/L ratio (manufacturer's recommended P/L ratio and a 50% reduced P/L ratio), and materials (Vitro Molar, Vitro Fil, Vitro Cem conventional GICs and Vitro Fil LC, Ortho Glass LC RMGICs. Five 1-mm-thick samples of each material-P/L ratio were produced for radiodensity evaluation. Samples were x-ray exposed onto Digora phosphor plate and radiodensity was obtained using the software Digora for Windows 2.5 Rev 0. For DTS, five (4.0x8.0 mm) cylinder samples of each material were tested (0.5 mm/min). Data were subjected to one- and two-way ANOVA (5x2) followed by Tukey's HSD test, or Kruskal-Wallis and Dunn's method. For paired comparisons, t-test or Mann-Whitney test were used (α=0.05). RESULTS: There was a significant interaction (P=0.001) for the studied factors (materials vs. P/L ratio). Reduced P/L ratio resulted in significantly lower DTS for the RMGICs, but radiodensity was affected for all materials (P |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-12-01 |
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/3848 10.1590/S1678-77572010000600008 |
url |
https://www.revistas.usp.br/jaos/article/view/3848 |
identifier_str_mv |
10.1590/S1678-77572010000600008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/3848/4538 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2010 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2010 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. 18 No. 6 (2010); 577-584 Journal of Applied Oral Science; Vol. 18 Núm. 6 (2010); 577-584 Journal of Applied Oral Science; v. 18 n. 6 (2010); 577-584 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_ |
1800221676127911936 |