Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins

Detalhes bibliográficos
Autor(a) principal: Faleiros,Daniel de Melo
Data de Publicação: 2021
Outros Autores: Schmitt,Carla C., Neumann,Miguel G.
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=S1516-14392021000600212
Resumo: The dependence of the photoinitiator concentration on the degree of conversion, mechanical properties and colour appearance of dental materials was studied. Alterations due to changes in the concentration of the photoinitiator were-undertaken. Test samples prepared by photopolymerizing BisGMA and TEGDMA in the presence of the photoinitiator camphorquinone (CQ) were prepared and submitted to mechanical analyses, i.e., compressive and diametral tensile strength and Barcol hardness tests and CIELAB colour analysis. The hardness and compressive tests showed a levelling off at concentrations around 0.5% and remained at those values up to 1.0%, whereas the DTS didn´t show any variation over that range of concentrations. The colour experiments showed dependence with the concentration of CQ in the photopolymerizing system due to its intense absorption in the yellow region. The results indicate that photopolymerization systems containing CQ/EDB as photoinitiator at concentrations between 0.5 and 1.0% present similar mechanical properties.
id ABMABCABPOL-1_c85be94b5b994097612abbdef765d79a
oai_identifier_str oai:scielo:S1516-14392021000600212
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
spelling Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental ResinsDental materialsphotoinitiatorscamphorquinonecompressive strengthdiametral tensile stressBarcol hardnessCIELAB analysisThe dependence of the photoinitiator concentration on the degree of conversion, mechanical properties and colour appearance of dental materials was studied. Alterations due to changes in the concentration of the photoinitiator were-undertaken. Test samples prepared by photopolymerizing BisGMA and TEGDMA in the presence of the photoinitiator camphorquinone (CQ) were prepared and submitted to mechanical analyses, i.e., compressive and diametral tensile strength and Barcol hardness tests and CIELAB colour analysis. The hardness and compressive tests showed a levelling off at concentrations around 0.5% and remained at those values up to 1.0%, whereas the DTS didn´t show any variation over that range of concentrations. The colour experiments showed dependence with the concentration of CQ in the photopolymerizing system due to its intense absorption in the yellow region. The results indicate that photopolymerization systems containing CQ/EDB as photoinitiator at concentrations between 0.5 and 1.0% present similar mechanical properties.ABM, ABC, ABPol2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600212Materials Research v.24 n.6 2021reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2021-0188info:eu-repo/semantics/openAccessFaleiros,Daniel de MeloSchmitt,Carla C.Neumann,Miguel G.eng2021-09-27T00:00:00Zoai:scielo:S1516-14392021000600212Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2021-09-27T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
title Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
spellingShingle Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
Faleiros,Daniel de Melo
Dental materials
photoinitiators
camphorquinone
compressive strength
diametral tensile stress
Barcol hardness
CIELAB analysis
title_short Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
title_full Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
title_fullStr Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
title_full_unstemmed Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
title_sort Influence of the Photoinitiator Concentration on the Mechanical and Optical Properties of Dental Resins
author Faleiros,Daniel de Melo
author_facet Faleiros,Daniel de Melo
Schmitt,Carla C.
Neumann,Miguel G.
author_role author
author2 Schmitt,Carla C.
Neumann,Miguel G.
author2_role author
author
dc.contributor.author.fl_str_mv Faleiros,Daniel de Melo
Schmitt,Carla C.
Neumann,Miguel G.
dc.subject.por.fl_str_mv Dental materials
photoinitiators
camphorquinone
compressive strength
diametral tensile stress
Barcol hardness
CIELAB analysis
topic Dental materials
photoinitiators
camphorquinone
compressive strength
diametral tensile stress
Barcol hardness
CIELAB analysis
description The dependence of the photoinitiator concentration on the degree of conversion, mechanical properties and colour appearance of dental materials was studied. Alterations due to changes in the concentration of the photoinitiator were-undertaken. Test samples prepared by photopolymerizing BisGMA and TEGDMA in the presence of the photoinitiator camphorquinone (CQ) were prepared and submitted to mechanical analyses, i.e., compressive and diametral tensile strength and Barcol hardness tests and CIELAB colour analysis. The hardness and compressive tests showed a levelling off at concentrations around 0.5% and remained at those values up to 1.0%, whereas the DTS didn´t show any variation over that range of concentrations. The colour experiments showed dependence with the concentration of CQ in the photopolymerizing system due to its intense absorption in the yellow region. The results indicate that photopolymerization systems containing CQ/EDB as photoinitiator at concentrations between 0.5 and 1.0% present similar mechanical properties.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
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=S1516-14392021000600212
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600212
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2021-0188
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.24 n.6 2021
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_ 1754212679527956480

Registros relacionados