Effect of relining on fiber post retention to root canal

Detalhes bibliográficos
Autor(a) principal: Faria-e-Silva,André Luís
Data de Publicação: 2009
Outros Autores: Pedrosa-Filho,Celso de Freitas, Menezes,Murilo de Sousa, Silveira,Daniele Machado da, Martins,Luís Roberto Marcondes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000600012
Resumo: One of the clinically relevant problems dentists face when restoring endodontically treated teeth is the mismatch between fiber post and post space diameters, which results in an excessively thick resin cement layer. Fiber post relining appears as a solution for this problem. OBJECTIVES: The aim of this study was to evaluate the effect of fiber post relining with composite resin on push-out bond strength. MATERIAL AND METHODS: Twenty bovine incisors were selected to assess post retention. The crowns were removed below the cementoenamel junction and the root canals were treated endodontically and flared with diamond burs. The roots were allocated into two groups (n=10): G1: fiber posts without relining and G2: fiber posts relined with composite resin. The posts were cemented with a dual-cured resin cement and the specimens were sectioned transversally. Three 1.5-mm thick slabs were obtained per root and identified as cervical, medium and apical thirds. The push-out test was performed at a crosshead speed of 0.5 mm/min until post dislodgement occurred. The failure mode of fractured specimens was analyzed under scanning electron microscopy. Data were analyzed by split-plot ANOVA and post-hoc Tukey's test at a pre-set alpha of 0.05. RESULTS: Relined fiber posts presented higher retention values than non-relined post in all thirds. No statistically significant differences (p>0.05) were found among thirds for relined posts. All failures occurred at the interface between resin cement and root dentin. CONCLUSIONS: Relining with composite resin seems to be an effective method to improve the retention of fiber posts to flared root canals.
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spelling Effect of relining on fiber post retention to root canalPost and core techniqueDental restorationEndodonticsOne of the clinically relevant problems dentists face when restoring endodontically treated teeth is the mismatch between fiber post and post space diameters, which results in an excessively thick resin cement layer. Fiber post relining appears as a solution for this problem. OBJECTIVES: The aim of this study was to evaluate the effect of fiber post relining with composite resin on push-out bond strength. MATERIAL AND METHODS: Twenty bovine incisors were selected to assess post retention. The crowns were removed below the cementoenamel junction and the root canals were treated endodontically and flared with diamond burs. The roots were allocated into two groups (n=10): G1: fiber posts without relining and G2: fiber posts relined with composite resin. The posts were cemented with a dual-cured resin cement and the specimens were sectioned transversally. Three 1.5-mm thick slabs were obtained per root and identified as cervical, medium and apical thirds. The push-out test was performed at a crosshead speed of 0.5 mm/min until post dislodgement occurred. The failure mode of fractured specimens was analyzed under scanning electron microscopy. Data were analyzed by split-plot ANOVA and post-hoc Tukey's test at a pre-set alpha of 0.05. RESULTS: Relined fiber posts presented higher retention values than non-relined post in all thirds. No statistically significant differences (p>0.05) were found among thirds for relined posts. All failures occurred at the interface between resin cement and root dentin. CONCLUSIONS: Relining with composite resin seems to be an effective method to improve the retention of fiber posts to flared root canals.Faculdade De Odontologia De Bauru - USP2009-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000600012Journal of Applied Oral Science v.17 n.6 2009reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S1678-77572009000600012info:eu-repo/semantics/openAccessFaria-e-Silva,André LuísPedrosa-Filho,Celso de FreitasMenezes,Murilo de SousaSilveira,Daniele Machado daMartins,Luís Roberto Marcondeseng2010-01-29T00:00:00Zoai:scielo:S1678-77572009000600012Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2010-01-29T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Effect of relining on fiber post retention to root canal
title Effect of relining on fiber post retention to root canal
spellingShingle Effect of relining on fiber post retention to root canal
Faria-e-Silva,André Luís
Post and core technique
Dental restoration
Endodontics
title_short Effect of relining on fiber post retention to root canal
title_full Effect of relining on fiber post retention to root canal
title_fullStr Effect of relining on fiber post retention to root canal
title_full_unstemmed Effect of relining on fiber post retention to root canal
title_sort Effect of relining on fiber post retention to root canal
author Faria-e-Silva,André Luís
author_facet Faria-e-Silva,André Luís
Pedrosa-Filho,Celso de Freitas
Menezes,Murilo de Sousa
Silveira,Daniele Machado da
Martins,Luís Roberto Marcondes
author_role author
author2 Pedrosa-Filho,Celso de Freitas
Menezes,Murilo de Sousa
Silveira,Daniele Machado da
Martins,Luís Roberto Marcondes
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Faria-e-Silva,André Luís
Pedrosa-Filho,Celso de Freitas
Menezes,Murilo de Sousa
Silveira,Daniele Machado da
Martins,Luís Roberto Marcondes
dc.subject.por.fl_str_mv Post and core technique
Dental restoration
Endodontics
topic Post and core technique
Dental restoration
Endodontics
description One of the clinically relevant problems dentists face when restoring endodontically treated teeth is the mismatch between fiber post and post space diameters, which results in an excessively thick resin cement layer. Fiber post relining appears as a solution for this problem. OBJECTIVES: The aim of this study was to evaluate the effect of fiber post relining with composite resin on push-out bond strength. MATERIAL AND METHODS: Twenty bovine incisors were selected to assess post retention. The crowns were removed below the cementoenamel junction and the root canals were treated endodontically and flared with diamond burs. The roots were allocated into two groups (n=10): G1: fiber posts without relining and G2: fiber posts relined with composite resin. The posts were cemented with a dual-cured resin cement and the specimens were sectioned transversally. Three 1.5-mm thick slabs were obtained per root and identified as cervical, medium and apical thirds. The push-out test was performed at a crosshead speed of 0.5 mm/min until post dislodgement occurred. The failure mode of fractured specimens was analyzed under scanning electron microscopy. Data were analyzed by split-plot ANOVA and post-hoc Tukey's test at a pre-set alpha of 0.05. RESULTS: Relined fiber posts presented higher retention values than non-relined post in all thirds. No statistically significant differences (p>0.05) were found among thirds for relined posts. All failures occurred at the interface between resin cement and root dentin. CONCLUSIONS: Relining with composite resin seems to be an effective method to improve the retention of fiber posts to flared root canals.
publishDate 2009
dc.date.none.fl_str_mv 2009-12-01
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=S1678-77572009000600012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572009000600012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1678-77572009000600012
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 Faculdade De Odontologia De Bauru - USP
publisher.none.fl_str_mv Faculdade De Odontologia De Bauru - USP
dc.source.none.fl_str_mv Journal of Applied Oral Science v.17 n.6 2009
reponame:Journal of applied oral science (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Journal of applied oral science (Online)
collection Journal of applied oral science (Online)
repository.name.fl_str_mv Journal of applied oral science (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||jaos@usp.br
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