Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin

Detalhes bibliográficos
Autor(a) principal: Chuenarrom,Chanya
Data de Publicação: 2009
Outros Autores: Benjakul,Pojjanut, Daosodsai,Paitoon
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=S1516-14392009000400016
Resumo: The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin. Twenty molar teeth were divided into twenty enamel and twenty dentin specimens. Each specimen was tested using a Knoop or Vickers microhardness tester at different loads and times. The difference in hardness between the groups was analyzed with two-way ANOVA followed by a Tukey test. The results revealed that a difference of indentation time did not influence the microhardness number of enamel and dentin. The KHN values of enamel and the VHN values of dentin were affected by variation of test loads. Therefore, the tooth hardness number for different loads may not be acceptable for comparison.
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spelling Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentindentinenamelKnoop hardnessVickers hardnessThe aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin. Twenty molar teeth were divided into twenty enamel and twenty dentin specimens. Each specimen was tested using a Knoop or Vickers microhardness tester at different loads and times. The difference in hardness between the groups was analyzed with two-way ANOVA followed by a Tukey test. The results revealed that a difference of indentation time did not influence the microhardness number of enamel and dentin. The KHN values of enamel and the VHN values of dentin were affected by variation of test loads. Therefore, the tooth hardness number for different loads may not be acceptable for comparison.ABM, ABC, ABPol2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400016Materials Research v.12 n.4 2009reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392009000400016info:eu-repo/semantics/openAccessChuenarrom,ChanyaBenjakul,PojjanutDaosodsai,Paitooneng2010-01-29T00:00:00Zoai:scielo:S1516-14392009000400016Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2010-01-29T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
title Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
spellingShingle Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
Chuenarrom,Chanya
dentin
enamel
Knoop hardness
Vickers hardness
title_short Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
title_full Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
title_fullStr Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
title_full_unstemmed Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
title_sort Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
author Chuenarrom,Chanya
author_facet Chuenarrom,Chanya
Benjakul,Pojjanut
Daosodsai,Paitoon
author_role author
author2 Benjakul,Pojjanut
Daosodsai,Paitoon
author2_role author
author
dc.contributor.author.fl_str_mv Chuenarrom,Chanya
Benjakul,Pojjanut
Daosodsai,Paitoon
dc.subject.por.fl_str_mv dentin
enamel
Knoop hardness
Vickers hardness
topic dentin
enamel
Knoop hardness
Vickers hardness
description The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin. Twenty molar teeth were divided into twenty enamel and twenty dentin specimens. Each specimen was tested using a Knoop or Vickers microhardness tester at different loads and times. The difference in hardness between the groups was analyzed with two-way ANOVA followed by a Tukey test. The results revealed that a difference of indentation time did not influence the microhardness number of enamel and dentin. The KHN values of enamel and the VHN values of dentin were affected by variation of test loads. Therefore, the tooth hardness number for different loads may not be acceptable for comparison.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
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=S1516-14392009000400016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392009000400016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392009000400016
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.12 n.4 2009
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
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