Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
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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Materials research (São Carlos. Online) |
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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 |
_version_ |
1754212659334479872 |