Influence of silane content and filler distribution on chemical-mechanical properties of resin composites
This study investigated the influence of silane concentration and filler size distribution on the chemical-mechanical properties of experimental composites. Experimental composites with silane contents of 0%, 1% and 3% (in relation to filler mass) and composites with mixtures of barium glass particles (median size = 0.4, 1 and 2 μm) and nanometric silica were prepared for silane and filler analyses, respectively. The degree of conversion (DC) was analyzed by FTIR. Biaxial flexural strength (BFS) was tested after 24-h or 90-d storage in water, and fracture toughness, after 24 h. The data were subjected to ANOVA and Tukey’s test (p = 0.05). The DC was not significantly affected by the silane content or filler distribution. The 0% silane group had the lowest immediate BFS, and the 90-d storage time reduced the strength of the 0% and 3% groups. BFS was not affected by filler distribution, and aging decreased the BFS of all the groups. Silanization increased the fracture toughness of both the 1% and 3% groups, similarly. Significantly higher fracture toughness was observed for mixtures with 2 μm glass particles. Based on the results, 3% silane content boosted the initial strength, but was more prone to degradation after water storage. Variations in the filler distribution did not affect BFS, but fracture toughness was significantly improved by increasing the filler size.
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO
2015
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oai:scielo:S1806-832420150001002672018-09-17Influence of silane content and filler distribution on chemical-mechanical properties of resin compositesXAVIER,Tathy AparecidaFRÓES-SALGADO,Nivea Regina de GodoyMEIER,Marcia MargareteBRAGA,Roberto Ruggiero Dental Materials Dental Restoration, Permanent Composite Resins Silanes This study investigated the influence of silane concentration and filler size distribution on the chemical-mechanical properties of experimental composites. Experimental composites with silane contents of 0%, 1% and 3% (in relation to filler mass) and composites with mixtures of barium glass particles (median size = 0.4, 1 and 2 μm) and nanometric silica were prepared for silane and filler analyses, respectively. The degree of conversion (DC) was analyzed by FTIR. Biaxial flexural strength (BFS) was tested after 24-h or 90-d storage in water, and fracture toughness, after 24 h. The data were subjected to ANOVA and Tukey’s test (p = 0.05). The DC was not significantly affected by the silane content or filler distribution. The 0% silane group had the lowest immediate BFS, and the 90-d storage time reduced the strength of the 0% and 3% groups. BFS was not affected by filler distribution, and aging decreased the BFS of all the groups. Silanization increased the fracture toughness of both the 1% and 3% groups, similarly. Significantly higher fracture toughness was observed for mixtures with 2 μm glass particles. Based on the results, 3% silane content boosted the initial strength, but was more prone to degradation after water storage. Variations in the filler distribution did not affect BFS, but fracture toughness was significantly improved by increasing the filler size.info:eu-repo/semantics/openAccessSociedade Brasileira de Pesquisa Odontológica - SBPqOBrazilian Oral Research v.29 n.1 20152015-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242015000100267en10.1590/1807-3107BOR-2015.vol29.0072 |
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XAVIER,Tathy Aparecida FRÓES-SALGADO,Nivea Regina de Godoy MEIER,Marcia Margarete BRAGA,Roberto Ruggiero Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
author_facet |
XAVIER,Tathy Aparecida FRÓES-SALGADO,Nivea Regina de Godoy MEIER,Marcia Margarete BRAGA,Roberto Ruggiero |
author_sort |
XAVIER,Tathy Aparecida |
title |
Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
title_short |
Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
title_full |
Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
title_fullStr |
Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
title_full_unstemmed |
Influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
title_sort |
influence of silane content and filler distribution on chemical-mechanical properties of resin composites |
description |
This study investigated the influence of silane concentration and filler size distribution on the chemical-mechanical properties of experimental composites. Experimental composites with silane contents of 0%, 1% and 3% (in relation to filler mass) and composites with mixtures of barium glass particles (median size = 0.4, 1 and 2 μm) and nanometric silica were prepared for silane and filler analyses, respectively. The degree of conversion (DC) was analyzed by FTIR. Biaxial flexural strength (BFS) was tested after 24-h or 90-d storage in water, and fracture toughness, after 24 h. The data were subjected to ANOVA and Tukey’s test (p = 0.05). The DC was not significantly affected by the silane content or filler distribution. The 0% silane group had the lowest immediate BFS, and the 90-d storage time reduced the strength of the 0% and 3% groups. BFS was not affected by filler distribution, and aging decreased the BFS of all the groups. Silanization increased the fracture toughness of both the 1% and 3% groups, similarly. Significantly higher fracture toughness was observed for mixtures with 2 μm glass particles. Based on the results, 3% silane content boosted the initial strength, but was more prone to degradation after water storage. Variations in the filler distribution did not affect BFS, but fracture toughness was significantly improved by increasing the filler size. |
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
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2015 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242015000100267 |
work_keys_str_mv |
AT xaviertathyaparecida influenceofsilanecontentandfillerdistributiononchemicalmechanicalpropertiesofresincomposites AT froessalgadoniveareginadegodoy influenceofsilanecontentandfillerdistributiononchemicalmechanicalpropertiesofresincomposites AT meiermarciamargarete influenceofsilanecontentandfillerdistributiononchemicalmechanicalpropertiesofresincomposites AT bragarobertoruggiero influenceofsilanecontentandfillerdistributiononchemicalmechanicalpropertiesofresincomposites |
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