Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials

Detalhes bibliográficos
Autor(a) principal: Cruz,Adriana Dibo da
Data de Publicação: 2008
Outros Autores: Sinhoreti,Mário Alexandre Coelho, Ambrosano,Gláucia Maria, Rastelli,Alessandra Nara de Souza, Bagnato,Vanderlei Salvador, Bóscolo,Frab Norberto
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000300014
Resumo: The aim of this study was to investigate the influence of therapeutic dose X rays on the microhardness (MH) and degree of conversion (DC) of two different esthetic restorative dental materials. The materials were photo-activated with a LED light-curing unit using three cure-times: 5, 20 and 40 seconds. The photo-activation was carried out in two distinct periods: before and after irradiation with doses of 5, 35 and 70 Gy, from a 6 MV X rays beam. In accordance with the methodology used, it was conclude that a therapeutic dose does not have a detrimental effect on the photoinitiator molecules, because the photo-activation occurred after they were irradiated. When the irradiation was applied before photo-activation, the materials showed MH improvement, but when photo-activation was performed after irradiation, there was less improvement. However, there was no correlation between MH and DC. Thus, a therapeutic dose applied to cured material can promote linking and breaking of chain bonds in a non-linear way.
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spelling Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materialsionizing radiationradiotherapyspectroscopyFourier transform infrareddental materialsThe aim of this study was to investigate the influence of therapeutic dose X rays on the microhardness (MH) and degree of conversion (DC) of two different esthetic restorative dental materials. The materials were photo-activated with a LED light-curing unit using three cure-times: 5, 20 and 40 seconds. The photo-activation was carried out in two distinct periods: before and after irradiation with doses of 5, 35 and 70 Gy, from a 6 MV X rays beam. In accordance with the methodology used, it was conclude that a therapeutic dose does not have a detrimental effect on the photoinitiator molecules, because the photo-activation occurred after they were irradiated. When the irradiation was applied before photo-activation, the materials showed MH improvement, but when photo-activation was performed after irradiation, there was less improvement. However, there was no correlation between MH and DC. Thus, a therapeutic dose applied to cured material can promote linking and breaking of chain bonds in a non-linear way.ABM, ABC, ABPol2008-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000300014Materials Research v.11 n.3 2008reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392008000300014info:eu-repo/semantics/openAccessCruz,Adriana Dibo daSinhoreti,Mário Alexandre CoelhoAmbrosano,Gláucia MariaRastelli,Alessandra Nara de SouzaBagnato,Vanderlei SalvadorBóscolo,Frab Norbertoeng2008-10-29T00:00:00Zoai:scielo:S1516-14392008000300014Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2008-10-29T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
title Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
spellingShingle Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
Cruz,Adriana Dibo da
ionizing radiation
radiotherapy
spectroscopy
Fourier transform infrared
dental materials
title_short Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
title_full Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
title_fullStr Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
title_full_unstemmed Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
title_sort Effect of therapeutic dose X rays on mechanical and chemical properties of esthetic dental materials
author Cruz,Adriana Dibo da
author_facet Cruz,Adriana Dibo da
Sinhoreti,Mário Alexandre Coelho
Ambrosano,Gláucia Maria
Rastelli,Alessandra Nara de Souza
Bagnato,Vanderlei Salvador
Bóscolo,Frab Norberto
author_role author
author2 Sinhoreti,Mário Alexandre Coelho
Ambrosano,Gláucia Maria
Rastelli,Alessandra Nara de Souza
Bagnato,Vanderlei Salvador
Bóscolo,Frab Norberto
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Cruz,Adriana Dibo da
Sinhoreti,Mário Alexandre Coelho
Ambrosano,Gláucia Maria
Rastelli,Alessandra Nara de Souza
Bagnato,Vanderlei Salvador
Bóscolo,Frab Norberto
dc.subject.por.fl_str_mv ionizing radiation
radiotherapy
spectroscopy
Fourier transform infrared
dental materials
topic ionizing radiation
radiotherapy
spectroscopy
Fourier transform infrared
dental materials
description The aim of this study was to investigate the influence of therapeutic dose X rays on the microhardness (MH) and degree of conversion (DC) of two different esthetic restorative dental materials. The materials were photo-activated with a LED light-curing unit using three cure-times: 5, 20 and 40 seconds. The photo-activation was carried out in two distinct periods: before and after irradiation with doses of 5, 35 and 70 Gy, from a 6 MV X rays beam. In accordance with the methodology used, it was conclude that a therapeutic dose does not have a detrimental effect on the photoinitiator molecules, because the photo-activation occurred after they were irradiated. When the irradiation was applied before photo-activation, the materials showed MH improvement, but when photo-activation was performed after irradiation, there was less improvement. However, there was no correlation between MH and DC. Thus, a therapeutic dose applied to cured material can promote linking and breaking of chain bonds in a non-linear way.
publishDate 2008
dc.date.none.fl_str_mv 2008-09-01
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=S1516-14392008000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392008000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392008000300014
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.11 n.3 2008
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212658938118144

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