COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA

Detalhes bibliográficos
Autor(a) principal: DEMARCO,Flávio Fernando
Data de Publicação: 1997
Outros Autores: TURBINO,Miriam Lacalle, MATSON,Edmir
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista de Odontologia da Universidade de São Paulo
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-06631997000300007
Resumo: The bond strength of dentin adhesives to dentin has increased after each generation. Although dentin substratum is part of the bonding process, little importance has been given to measure dentin cohesive strength. The aim of this study was to evaluate the cohesive strength of dentin in human canines. Seventeen non carious canines were selected. All of them had been extracted for more than one year. The teeth were ground until dentin square samples with approximately 2 X 2 mm were obtained. They were embedded in acrylic resin and subjected to shear stress, in a Wolpert Machine, at a crosshead speed of 0.5 mm/min. The mean cohesive strength of dentin in shear mode was 33.95 (+-9.72) MPa. The fracture surfaces were observed under a X40 magnification. A finite element analysis was performed to observe the stress distribution as related to the shear test. The failure pattern was compatible with the shear test and also with the stress distribution in the finite element analysis
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spelling COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINADentinDentin adhesivesBond strengthThe bond strength of dentin adhesives to dentin has increased after each generation. Although dentin substratum is part of the bonding process, little importance has been given to measure dentin cohesive strength. The aim of this study was to evaluate the cohesive strength of dentin in human canines. Seventeen non carious canines were selected. All of them had been extracted for more than one year. The teeth were ground until dentin square samples with approximately 2 X 2 mm were obtained. They were embedded in acrylic resin and subjected to shear stress, in a Wolpert Machine, at a crosshead speed of 0.5 mm/min. The mean cohesive strength of dentin in shear mode was 33.95 (+-9.72) MPa. The fracture surfaces were observed under a X40 magnification. A finite element analysis was performed to observe the stress distribution as related to the shear test. The failure pattern was compatible with the shear test and also with the stress distribution in the finite element analysisUniversidade de São Paulo1997-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-06631997000300007Revista de Odontologia da Universidade de São Paulo v.11 n.3 1997reponame:Revista de Odontologia da Universidade de São Pauloinstname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-06631997000300007info:eu-repo/semantics/openAccessDEMARCO,Flávio FernandoTURBINO,Miriam LacalleMATSON,Edmireng1999-03-11T00:00:00Zoai:scielo:S0103-06631997000300007Revistahttps://www.scielo.br/j/rousp/PUBhttps://old.scielo.br/oai/scielo-oai.php||pob@edu.usp.br0103-06630103-0663opendoar:1999-03-11T00:00Revista de Odontologia da Universidade de São Paulo - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
title COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
spellingShingle COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
DEMARCO,Flávio Fernando
Dentin
Dentin adhesives
Bond strength
title_short COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
title_full COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
title_fullStr COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
title_full_unstemmed COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
title_sort COHESIVE STRENGTH OF DENTIN RESISTÊNCIA COESIVA DA DENTINA
author DEMARCO,Flávio Fernando
author_facet DEMARCO,Flávio Fernando
TURBINO,Miriam Lacalle
MATSON,Edmir
author_role author
author2 TURBINO,Miriam Lacalle
MATSON,Edmir
author2_role author
author
dc.contributor.author.fl_str_mv DEMARCO,Flávio Fernando
TURBINO,Miriam Lacalle
MATSON,Edmir
dc.subject.por.fl_str_mv Dentin
Dentin adhesives
Bond strength
topic Dentin
Dentin adhesives
Bond strength
description The bond strength of dentin adhesives to dentin has increased after each generation. Although dentin substratum is part of the bonding process, little importance has been given to measure dentin cohesive strength. The aim of this study was to evaluate the cohesive strength of dentin in human canines. Seventeen non carious canines were selected. All of them had been extracted for more than one year. The teeth were ground until dentin square samples with approximately 2 X 2 mm were obtained. They were embedded in acrylic resin and subjected to shear stress, in a Wolpert Machine, at a crosshead speed of 0.5 mm/min. The mean cohesive strength of dentin in shear mode was 33.95 (+-9.72) MPa. The fracture surfaces were observed under a X40 magnification. A finite element analysis was performed to observe the stress distribution as related to the shear test. The failure pattern was compatible with the shear test and also with the stress distribution in the finite element analysis
publishDate 1997
dc.date.none.fl_str_mv 1997-07-01
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=S0103-06631997000300007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-06631997000300007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-06631997000300007
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 Universidade de São Paulo
publisher.none.fl_str_mv Universidade de São Paulo
dc.source.none.fl_str_mv Revista de Odontologia da Universidade de São Paulo v.11 n.3 1997
reponame:Revista de Odontologia da Universidade de São Paulo
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Revista de Odontologia da Universidade de São Paulo
collection Revista de Odontologia da Universidade de São Paulo
repository.name.fl_str_mv Revista de Odontologia da Universidade de São Paulo - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||pob@edu.usp.br
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