Physicomechanical and thermal analysis of bulk-fill and conventional composites

Detalhes bibliográficos
Autor(a) principal: NASCIMENTO,Armiliana Soares
Data de Publicação: 2019
Outros Autores: 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
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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spelling 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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