Effect of different light-curing devices and aging procedures on composite knoop microhardness

Detalhes bibliográficos
Autor(a) principal: Voltarelli,Fernanda Regina
Data de Publicação: 2009
Outros Autores: Santos-Daroz,Claudia Batitucci dos, Alves,Marcelo Corrêa, Peris,Alessandra Rezende, March,Giselle Maria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242009000400019
Resumo: The aim of this study was to evaluate the effect of light-curing devices (Halogen/HAL, Light Emitting Diodes/LED, Argon Laser/LAS and Plasma Arc/PAC) and aging procedures (Mechanical Cycling/MC, Thermal Cycling/TC, Storage/S, MC+TC and MC+TC+S) on the micro-hardness of bottom/B and top/T surfaces of 2-mm-high composite resin cylinders. The Knoop microhardness test (25 g, 20 s) on both B and T was performed before and after each aging procedure. For B and T, before aging procedures, PAC showed reduced polymerization effectiveness when compared with HAL. In the T, after TC, PAC and LAS had also showed reduced polymerization effectiveness when compared to HAL and LED. For all light-curing devices, MC+TC+S and S affected the Knoop microhardness values. In the B, no difference could be observed among the aging procedures for PAC. From all light-curing units, PAC may have rendered composites of reduced quality and the storage aging procedures were the most harmful to the polymer hardness.
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spelling Effect of different light-curing devices and aging procedures on composite knoop microhardnessDental materialsHardness testsDental curing lightsDental stress analysisThe aim of this study was to evaluate the effect of light-curing devices (Halogen/HAL, Light Emitting Diodes/LED, Argon Laser/LAS and Plasma Arc/PAC) and aging procedures (Mechanical Cycling/MC, Thermal Cycling/TC, Storage/S, MC+TC and MC+TC+S) on the micro-hardness of bottom/B and top/T surfaces of 2-mm-high composite resin cylinders. The Knoop microhardness test (25 g, 20 s) on both B and T was performed before and after each aging procedure. For B and T, before aging procedures, PAC showed reduced polymerization effectiveness when compared with HAL. In the T, after TC, PAC and LAS had also showed reduced polymerization effectiveness when compared to HAL and LED. For all light-curing devices, MC+TC+S and S affected the Knoop microhardness values. In the B, no difference could be observed among the aging procedures for PAC. From all light-curing units, PAC may have rendered composites of reduced quality and the storage aging procedures were the most harmful to the polymer hardness.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2009-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242009000400019Brazilian Oral Research v.23 n.4 2009reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242009000400019info:eu-repo/semantics/openAccessVoltarelli,Fernanda ReginaSantos-Daroz,Claudia Batitucci dosAlves,Marcelo CorrêaPeris,Alessandra RezendeMarch,Giselle Mariaeng2009-12-15T00:00:00Zoai:scielo:S1806-83242009000400019Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2009-12-15T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Effect of different light-curing devices and aging procedures on composite knoop microhardness
title Effect of different light-curing devices and aging procedures on composite knoop microhardness
spellingShingle Effect of different light-curing devices and aging procedures on composite knoop microhardness
Voltarelli,Fernanda Regina
Dental materials
Hardness tests
Dental curing lights
Dental stress analysis
title_short Effect of different light-curing devices and aging procedures on composite knoop microhardness
title_full Effect of different light-curing devices and aging procedures on composite knoop microhardness
title_fullStr Effect of different light-curing devices and aging procedures on composite knoop microhardness
title_full_unstemmed Effect of different light-curing devices and aging procedures on composite knoop microhardness
title_sort Effect of different light-curing devices and aging procedures on composite knoop microhardness
author Voltarelli,Fernanda Regina
author_facet Voltarelli,Fernanda Regina
Santos-Daroz,Claudia Batitucci dos
Alves,Marcelo Corrêa
Peris,Alessandra Rezende
March,Giselle Maria
author_role author
author2 Santos-Daroz,Claudia Batitucci dos
Alves,Marcelo Corrêa
Peris,Alessandra Rezende
March,Giselle Maria
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Voltarelli,Fernanda Regina
Santos-Daroz,Claudia Batitucci dos
Alves,Marcelo Corrêa
Peris,Alessandra Rezende
March,Giselle Maria
dc.subject.por.fl_str_mv Dental materials
Hardness tests
Dental curing lights
Dental stress analysis
topic Dental materials
Hardness tests
Dental curing lights
Dental stress analysis
description The aim of this study was to evaluate the effect of light-curing devices (Halogen/HAL, Light Emitting Diodes/LED, Argon Laser/LAS and Plasma Arc/PAC) and aging procedures (Mechanical Cycling/MC, Thermal Cycling/TC, Storage/S, MC+TC and MC+TC+S) on the micro-hardness of bottom/B and top/T surfaces of 2-mm-high composite resin cylinders. The Knoop microhardness test (25 g, 20 s) on both B and T was performed before and after each aging procedure. For B and T, before aging procedures, PAC showed reduced polymerization effectiveness when compared with HAL. In the T, after TC, PAC and LAS had also showed reduced polymerization effectiveness when compared to HAL and LED. For all light-curing devices, MC+TC+S and S affected the Knoop microhardness values. In the B, no difference could be observed among the aging procedures for PAC. From all light-curing units, PAC may have rendered composites of reduced quality and the storage aging procedures were the most harmful to the polymer hardness.
publishDate 2009
dc.date.none.fl_str_mv 2009-12-01
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=S1806-83242009000400019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242009000400019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-83242009000400019
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.23 n.4 2009
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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