Micromechanics of dentin/adhesive interface in function of dentin depth: 3d finite element analysis

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dc.contributor.authorAnchieta, Rodolfo Bruniera [UNESP]
dc.contributor.authorRocha, Eduardo Passos [UNESP]
dc.contributor.authorSundfeld, Renato Herman [UNESP]
dc.contributor.authorMartin Jr., Manoel
dc.contributor.authorGiannini, Marcelo
dc.contributor.authorReis, André Figueiredo
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUningá University
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionGuarulhos University
dc.date.accessioned2014-05-27T11:25:58Z
dc.date.available2014-05-27T11:25:58Z
dc.date.issued2011-08-10
dc.description.abstractObjectives: The aim of this study was to analyze the stress distribution on dentin/adhesive interface (d/a) through a 3-D finite element analysis (FEA) varying the number and diameter of the dentin tubules orifice according to dentin depth, keeping hybrid layer (HL) thickness and TAǴs length constant. Materials and Methods: 3 models were built through the SolidWorks software: SD - specimen simulating superficial dentin (41 x 41 x 82 μm), with a 3 μm thick HL, a 17 μm length Tag, and 8 tubules with a 0.9 μm diameter restored with composite resin. MD - similar to M1 with 12 tubules with a 1.2 μm diameter, simulating medium dentin. DD - similar to M1 with 16 tubules with a 2.5 μm diameter, simulating deep dentin. Other two models were built in order to keep the diameter constant in 2.5 μm: MS - similar to SD with 8 tubules; and MM - similar to MD with 12 tubules. The boundary condition was applied to the base surface of each specimen. Tensile load (0.03N) was performed on the composite resin top surface. Stress field (maximum principal stress in tension - σMAX) was performed using Ansys Wokbench 10.0. Results: The peak of σMAX (MPa) were similar between SD (110) and MD (106), and higher for DD (134). The stress distribution pathway was similar for all models, starting from peritubular dentin to adhesive layer, intertubular dentin and hybrid layer. The peak of σMAX (MPa) for those structures was, respectively: 134 (DD), 56.9 (SD), 45.5 (DD), and 36.7 (MD). Conclusions: The number of dentin tubules had no influence in the σMAX at the dentin/adhesive interface. Peritubular and intertubular dentin showed higher stress with the bigger dentin tubules orifice condition. The σMAX in the hybrid layer and adhesive layer were going down from superficial dentin to deeper dentin. In a failure scenario, the hybrid layer in contact with peritubular dentin and adhesive layer is the first region for breaking the adhesion. © 2011 Nova Science Publishers, Inc.en
dc.description.affiliationDepartment of Dental Materials and Prosthodontics Sao Paulo State University- Araçatuba School of Dentistry -UNESP, Araçatuba, Sao Paulo
dc.description.affiliationUningá University, Londrina, Parana
dc.description.affiliationDepartment of Restorative Dentistry Sao Paulo State University - Araçatuba School of Dentistry -UNESP, Araçatuba, Sao Paulo
dc.description.affiliationDepartment of Restorative Dentistry Division of Operative Dentistry Piracicaba School of Dentistry University of Campinas, Piracicaba, SP
dc.description.affiliationDepartment of Operative Dentistry Guarulhos University
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics Sao Paulo State University- Araçatuba School of Dentistry -UNESP, Araçatuba, Sao Paulo
dc.description.affiliationUnespDepartment of Restorative Dentistry Sao Paulo State University - Araçatuba School of Dentistry -UNESP, Araçatuba, Sao Paulo
dc.format.extent199-210
dc.identifierhttps://www.novapublishers.com/catalog/product_info.php?products_id=23419&osCsid=b17406f46d25c202a8c2998398043182
dc.identifier.citationInternational Journal of Clinical Dentistry, v. 4, n. 3, p. 199-210, 2011.
dc.identifier.issn1939-5833
dc.identifier.lattes3383392287039820
dc.identifier.lattes9693348671473011
dc.identifier.scopus2-s2.0-79961165490
dc.identifier.urihttp://hdl.handle.net/11449/72601
dc.language.isoeng
dc.relation.ispartofInternational Journal of Clinical Dentistry
dc.relation.ispartofsjr0,107
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAdhesive
dc.subjectDentin
dc.subjectDentin depth
dc.subjectDentin tubules
dc.subjectFinite element analysis
dc.subjectHybrid layer
dc.titleMicromechanics of dentin/adhesive interface in function of dentin depth: 3d finite element analysisen
dc.typeArtigo
dcterms.licensehttps://www.novapublishers.com/web/web_files/Copyright%20Transfer%20Form%20with%20Manuscript%20submission.pdf
unesp.author.lattes3383392287039820
unesp.author.lattes9693348671473011
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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Artigos - Materiais Odontológicos e Prótese - FOA
Artigos - Odontologia Restauradora - FOA