Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1678-77572009000700005 http://hdl.handle.net/11449/71342 |
Resumo: | The presence of porosities at the dentin/adhesive interface has been observed with the use of new generation dentin bonding systems. These porosities tend to contradict the concept that etching and hybridization processes occur equally and simultaneously. Therefore, the aim of this study was to evaluate the micromechanical behavior of the hybrid layer (HL) with voids based on a self-etching adhesive system using 3-D finite element (FE) analysis. Three FE models (Mr) were built: Mr, dentin specimen (41x41x82 μm) with a regular and perfect (i.e. pore-free) HL based on a self-etching adhesive system, restored with composite resin; Mp, similar to M, but containing 25% (v/v) voids in the HL; Mpp, similar to Mr, but containing 50% (v/v) voids in the HL. A tensile load (0.03N) was applied on top of the composite resin. The stress field was obtained by using Ansys Workbench 10.0. The nodes of the base of the specimen were constrained in the x, y and z axes. The maximum principal stress (σmax) was obtained for all structures at the dentin/adhesive interface. The Mpp showed the highest peak of σmax in the HL (32.2 MPa), followed by Mp (30 MPa) and Mr (28.4 MPa). The stress concentration in the peritubular dentin was high in all models (120 MPa). All other structures positioned far from voids showed similar increase of stress. Voids incorporated into the HL raised the σmax in this region by 13.5%. This behavior might be responsible for lower bond strengths of self-etching and single-bottle adhesives, as reported in the literature. |
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Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysisdentin bonding agentresinchemistrydental bondingdental caredental etchingdentinfinite element analysishumanmaterials testingmechanical stressmethodologysurface propertytensile strengthultrastructureComposite ResinsDental BondingDental EtchingDental Stress AnalysisDentinDentin-Bonding AgentsFinite Element AnalysisHumansMaterials TestingStress, MechanicalSurface PropertiesTensile StrengthThe presence of porosities at the dentin/adhesive interface has been observed with the use of new generation dentin bonding systems. These porosities tend to contradict the concept that etching and hybridization processes occur equally and simultaneously. Therefore, the aim of this study was to evaluate the micromechanical behavior of the hybrid layer (HL) with voids based on a self-etching adhesive system using 3-D finite element (FE) analysis. Three FE models (Mr) were built: Mr, dentin specimen (41x41x82 μm) with a regular and perfect (i.e. pore-free) HL based on a self-etching adhesive system, restored with composite resin; Mp, similar to M, but containing 25% (v/v) voids in the HL; Mpp, similar to Mr, but containing 50% (v/v) voids in the HL. A tensile load (0.03N) was applied on top of the composite resin. The stress field was obtained by using Ansys Workbench 10.0. The nodes of the base of the specimen were constrained in the x, y and z axes. The maximum principal stress (σmax) was obtained for all structures at the dentin/adhesive interface. The Mpp showed the highest peak of σmax in the HL (32.2 MPa), followed by Mp (30 MPa) and Mr (28.4 MPa). The stress concentration in the peritubular dentin was high in all models (120 MPa). All other structures positioned far from voids showed similar increase of stress. Voids incorporated into the HL raised the σmax in this region by 13.5%. This behavior might be responsible for lower bond strengths of self-etching and single-bottle adhesives, as reported in the literature.Universidade Estadual Paulista (Unesp)Martini, Ana Paula [UNESP]Anchieta, Rodolfo Bruniera [UNESP]Rocha, Eduardo Passos [UNESP]Freitas Junior, Amilcar Chagas [UNESP]Almeida, Erika Oliveira de [UNESP]Sundfeld, Renato Herman [UNESP]Luersen, Marco Antonio2014-05-27T11:24:05Z2014-05-27T11:24:05Z2009-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article19-26application/pdfhttp://dx.doi.org/10.1590/S1678-77572009000700005Journal of applied oral science : revista FOB, v. 17 Suppl, p. 19-26.1678-7765http://hdl.handle.net/11449/7134210.1590/S1678-77572009000700005S1678-77572009000700005WOS:0002865479000052-s2.0-786507949432-s2.0-78650794943.pdf33833922870398209693348671473011Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of applied oral science : revista FOBinfo:eu-repo/semantics/openAccess2023-11-25T06:15:31Zoai:repositorio.unesp.br:11449/71342Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:40:35.978488Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
title |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
spellingShingle |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis Martini, Ana Paula [UNESP] dentin bonding agent resin chemistry dental bonding dental care dental etching dentin finite element analysis human materials testing mechanical stress methodology surface property tensile strength ultrastructure Composite Resins Dental Bonding Dental Etching Dental Stress Analysis Dentin Dentin-Bonding Agents Finite Element Analysis Humans Materials Testing Stress, Mechanical Surface Properties Tensile Strength |
title_short |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
title_full |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
title_fullStr |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
title_full_unstemmed |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
title_sort |
Influence of voids in the hybrid layer based on self-etching adhesive systems: a 3-D FE analysis |
author |
Martini, Ana Paula [UNESP] |
author_facet |
Martini, Ana Paula [UNESP] Anchieta, Rodolfo Bruniera [UNESP] Rocha, Eduardo Passos [UNESP] Freitas Junior, Amilcar Chagas [UNESP] Almeida, Erika Oliveira de [UNESP] Sundfeld, Renato Herman [UNESP] Luersen, Marco Antonio |
author_role |
author |
author2 |
Anchieta, Rodolfo Bruniera [UNESP] Rocha, Eduardo Passos [UNESP] Freitas Junior, Amilcar Chagas [UNESP] Almeida, Erika Oliveira de [UNESP] Sundfeld, Renato Herman [UNESP] Luersen, Marco Antonio |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Martini, Ana Paula [UNESP] Anchieta, Rodolfo Bruniera [UNESP] Rocha, Eduardo Passos [UNESP] Freitas Junior, Amilcar Chagas [UNESP] Almeida, Erika Oliveira de [UNESP] Sundfeld, Renato Herman [UNESP] Luersen, Marco Antonio |
dc.subject.por.fl_str_mv |
dentin bonding agent resin chemistry dental bonding dental care dental etching dentin finite element analysis human materials testing mechanical stress methodology surface property tensile strength ultrastructure Composite Resins Dental Bonding Dental Etching Dental Stress Analysis Dentin Dentin-Bonding Agents Finite Element Analysis Humans Materials Testing Stress, Mechanical Surface Properties Tensile Strength |
topic |
dentin bonding agent resin chemistry dental bonding dental care dental etching dentin finite element analysis human materials testing mechanical stress methodology surface property tensile strength ultrastructure Composite Resins Dental Bonding Dental Etching Dental Stress Analysis Dentin Dentin-Bonding Agents Finite Element Analysis Humans Materials Testing Stress, Mechanical Surface Properties Tensile Strength |
description |
The presence of porosities at the dentin/adhesive interface has been observed with the use of new generation dentin bonding systems. These porosities tend to contradict the concept that etching and hybridization processes occur equally and simultaneously. Therefore, the aim of this study was to evaluate the micromechanical behavior of the hybrid layer (HL) with voids based on a self-etching adhesive system using 3-D finite element (FE) analysis. Three FE models (Mr) were built: Mr, dentin specimen (41x41x82 μm) with a regular and perfect (i.e. pore-free) HL based on a self-etching adhesive system, restored with composite resin; Mp, similar to M, but containing 25% (v/v) voids in the HL; Mpp, similar to Mr, but containing 50% (v/v) voids in the HL. A tensile load (0.03N) was applied on top of the composite resin. The stress field was obtained by using Ansys Workbench 10.0. The nodes of the base of the specimen were constrained in the x, y and z axes. The maximum principal stress (σmax) was obtained for all structures at the dentin/adhesive interface. The Mpp showed the highest peak of σmax in the HL (32.2 MPa), followed by Mp (30 MPa) and Mr (28.4 MPa). The stress concentration in the peritubular dentin was high in all models (120 MPa). All other structures positioned far from voids showed similar increase of stress. Voids incorporated into the HL raised the σmax in this region by 13.5%. This behavior might be responsible for lower bond strengths of self-etching and single-bottle adhesives, as reported in the literature. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-01 2014-05-27T11:24:05Z 2014-05-27T11:24:05Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1678-77572009000700005 Journal of applied oral science : revista FOB, v. 17 Suppl, p. 19-26. 1678-7765 http://hdl.handle.net/11449/71342 10.1590/S1678-77572009000700005 S1678-77572009000700005 WOS:000286547900005 2-s2.0-78650794943 2-s2.0-78650794943.pdf 3383392287039820 9693348671473011 |
url |
http://dx.doi.org/10.1590/S1678-77572009000700005 http://hdl.handle.net/11449/71342 |
identifier_str_mv |
Journal of applied oral science : revista FOB, v. 17 Suppl, p. 19-26. 1678-7765 10.1590/S1678-77572009000700005 S1678-77572009000700005 WOS:000286547900005 2-s2.0-78650794943 2-s2.0-78650794943.pdf 3383392287039820 9693348671473011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of applied oral science : revista FOB |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
19-26 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128965862227968 |