Physicomechanical and thermal analysis of bulk-fill and conventional composites
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Oral Research |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242019000100209 |
Resumo: | Abstract The aim of this study was to evaluate the degree of conversion (DC) and the thermal stability of bulk-fill and conventional composite resins. Eleven composite resin samples were prepared to evaluate the DC, Vickers microhardness (VMH), mass and residue/particle loss, glass transition temperature (Tg), enthalpy, and linear coefficient of thermal expansion (CTE) using infrared spectroscopy (FTIR), microdurometer analyses, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dilatometry (DIL). The data were subjected to statistical analysis, with a significance level of 95%. DC and VMH were not influenced by the polymerized side of the sample, and statistical differences were recorded only among the materials. Decomposition temperature, melting, and mass and residue loss were dependent on the material and on the evaluation condition (polymerized and non-polymerized). Tg values were similar between the composites, without statistically significant difference, and CTE ranged from 10.5 to 37.1 (10-6/°C), with no statistical difference between the materials. There was a moderate negative correlation between CTE and the % of load particles, by weight. Most resins had a DC above that which is reported in the literature. TGA, Tg, and CTE analyses showed the thermal behavior of the evaluated composites, providing data for future research, assisting with the choice of material for direct or semidirect restorations, and helping choose the appropriate temperature for increasing the DC of such materials. |
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Brazilian Oral Research |
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Physicomechanical and thermal analysis of bulk-fill and conventional compositesDental MaterialsComposite ResinsTransition TemperatureIn Vitro TechniquesAbstract The aim of this study was to evaluate the degree of conversion (DC) and the thermal stability of bulk-fill and conventional composite resins. Eleven composite resin samples were prepared to evaluate the DC, Vickers microhardness (VMH), mass and residue/particle loss, glass transition temperature (Tg), enthalpy, and linear coefficient of thermal expansion (CTE) using infrared spectroscopy (FTIR), microdurometer analyses, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dilatometry (DIL). The data were subjected to statistical analysis, with a significance level of 95%. DC and VMH were not influenced by the polymerized side of the sample, and statistical differences were recorded only among the materials. Decomposition temperature, melting, and mass and residue loss were dependent on the material and on the evaluation condition (polymerized and non-polymerized). Tg values were similar between the composites, without statistically significant difference, and CTE ranged from 10.5 to 37.1 (10-6/°C), with no statistical difference between the materials. There was a moderate negative correlation between CTE and the % of load particles, by weight. Most resins had a DC above that which is reported in the literature. TGA, Tg, and CTE analyses showed the thermal behavior of the evaluated composites, providing data for future research, assisting with the choice of material for direct or semidirect restorations, and helping choose the appropriate temperature for increasing the DC of such materials.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242019000100209Brazilian Oral Research v.33 2019reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/1807-3107bor-2019.vol33.0008info:eu-repo/semantics/openAccessNASCIMENTO,Armiliana SoaresRODRIGUES,José Filipe BacalhauTORRES,Rodolfo Henrique NogueiraSANTOS,Kleilton OliveiraFOOK,Marcus Vinicius LiaALBUQUERQUE,Monica Soares deLIMA,Eliane Alves deFILGUEIRA,Pedro Tardelly DinizSANTOS,João Batista Morais dosOLIVEIRA,Leonardo Jose Rodrigues deBRAZ,Rodivaneng2019-03-22T00:00:00Zoai:scielo:S1806-83242019000100209Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2019-03-22T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false |
dc.title.none.fl_str_mv |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
title |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
spellingShingle |
Physicomechanical and thermal analysis of bulk-fill and conventional composites NASCIMENTO,Armiliana Soares Dental Materials Composite Resins Transition Temperature In Vitro Techniques |
title_short |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
title_full |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
title_fullStr |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
title_full_unstemmed |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
title_sort |
Physicomechanical and thermal analysis of bulk-fill and conventional composites |
author |
NASCIMENTO,Armiliana Soares |
author_facet |
NASCIMENTO,Armiliana Soares RODRIGUES,José Filipe Bacalhau TORRES,Rodolfo Henrique Nogueira SANTOS,Kleilton Oliveira FOOK,Marcus Vinicius Lia ALBUQUERQUE,Monica Soares de LIMA,Eliane Alves de FILGUEIRA,Pedro Tardelly Diniz SANTOS,João Batista Morais dos OLIVEIRA,Leonardo Jose Rodrigues de BRAZ,Rodivan |
author_role |
author |
author2 |
RODRIGUES,José Filipe Bacalhau TORRES,Rodolfo Henrique Nogueira SANTOS,Kleilton Oliveira FOOK,Marcus Vinicius Lia ALBUQUERQUE,Monica Soares de LIMA,Eliane Alves de FILGUEIRA,Pedro Tardelly Diniz SANTOS,João Batista Morais dos OLIVEIRA,Leonardo Jose Rodrigues de BRAZ,Rodivan |
author2_role |
author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
NASCIMENTO,Armiliana Soares RODRIGUES,José Filipe Bacalhau TORRES,Rodolfo Henrique Nogueira SANTOS,Kleilton Oliveira FOOK,Marcus Vinicius Lia ALBUQUERQUE,Monica Soares de LIMA,Eliane Alves de FILGUEIRA,Pedro Tardelly Diniz SANTOS,João Batista Morais dos OLIVEIRA,Leonardo Jose Rodrigues de BRAZ,Rodivan |
dc.subject.por.fl_str_mv |
Dental Materials Composite Resins Transition Temperature In Vitro Techniques |
topic |
Dental Materials Composite Resins Transition Temperature In Vitro Techniques |
description |
Abstract The aim of this study was to evaluate the degree of conversion (DC) and the thermal stability of bulk-fill and conventional composite resins. Eleven composite resin samples were prepared to evaluate the DC, Vickers microhardness (VMH), mass and residue/particle loss, glass transition temperature (Tg), enthalpy, and linear coefficient of thermal expansion (CTE) using infrared spectroscopy (FTIR), microdurometer analyses, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dilatometry (DIL). The data were subjected to statistical analysis, with a significance level of 95%. DC and VMH were not influenced by the polymerized side of the sample, and statistical differences were recorded only among the materials. Decomposition temperature, melting, and mass and residue loss were dependent on the material and on the evaluation condition (polymerized and non-polymerized). Tg values were similar between the composites, without statistically significant difference, and CTE ranged from 10.5 to 37.1 (10-6/°C), with no statistical difference between the materials. There was a moderate negative correlation between CTE and the % of load particles, by weight. Most resins had a DC above that which is reported in the literature. TGA, Tg, and CTE analyses showed the thermal behavior of the evaluated composites, providing data for future research, assisting with the choice of material for direct or semidirect restorations, and helping choose the appropriate temperature for increasing the DC of such materials. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242019000100209 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242019000100209 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1807-3107bor-2019.vol33.0008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
publisher.none.fl_str_mv |
Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
dc.source.none.fl_str_mv |
Brazilian Oral Research v.33 2019 reponame:Brazilian Oral Research instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO) instacron:SBPQO |
instname_str |
Sociedade Brasileira de Pesquisa Odontológica (SBPqO) |
instacron_str |
SBPQO |
institution |
SBPQO |
reponame_str |
Brazilian Oral Research |
collection |
Brazilian Oral Research |
repository.name.fl_str_mv |
Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO) |
repository.mail.fl_str_mv |
pob@edu.usp.br||bor@sbpqo.org.br |
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1750318326222946304 |