Influence of different post design and composition on stress distribution in maxillary central incisor: Finite element analysis.

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dc.contributor.authorSilva, Natercia R
dc.contributor.authorCastro, Carolina G
dc.contributor.authorSantos-Filho, Paulo C F
dc.contributor.authorSilva, Gisele R
dc.contributor.authorCampos, Roberto E
dc.contributor.authorSoares, Paulo Vinicins
dc.contributor.authorSoares, Carlos Jose
dc.date.accessioned2012-07-20T05:34:40Z
dc.date.available2012-07-20T05:34:40Z
dc.date.issued2009-04
dc.description.abstractBackground: Post design and material has very important effects on dentinal stress distribution since the post placement can create stresses that lead to root fracture. Materials and Methods: In this study we use finite element analysis (FEA) to evaluate stress distribution on endodontically treated maxillary central incisors that have been restored with different prefabricated posts. Six models were generated from the image of anatomical plate: Four metallic posts (ParaPost XH, ParaPost XT, ParaPost XP, and Flexi-Flange) and one fiberglass post (ParaPost Fiber Lux). The sixth model was a control-a sound maxillary central incisor. We used CAD software and exported the models to ANSYS 9.0. All the materials and structures were considered elastic, isotropic, homogeneous, and linear except the fiberglass post which was considered orthotropic. The values for the mechanical properties were obtained by a review of the literature and the model was meshed with 8-node tetrahedral elements. A load of 2N was applied to the lingual surface at an angle of 135°. Results: The stress results were recorded by shear stress and von Mises criteria; it was observed that there was no difference for stress distribution among the titanium posts in the radicular portions and into posts. There was higher stress concentration on the coronary portion with the titanium posts than with the glass fiber post. It seems that the metallic posts' external configuration does not influence the stress distribution. Conclusion: Fiber posts show more homogeneous stress distribution than metallic posts. The post material seems to be more relevant for the stress distribution in endodontically treated teeth than the posts' external configuration.en_US
dc.identifier.citationSilva Natercia R, Castro Carolina G, Santos-Filho Paulo C F, Silva Gisele R, Campos Roberto E, Soares Paulo Vinicins, Soares Carlos Jose. Influence of different post design and composition on stress distribution in maxillary central incisor: Finite element analysis. Indian Journal of Dental Research. 2009 Apr-Jun; 20(2): 153-158.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/139705
dc.language.isoenen_US
dc.source.urihttps://www.ijdr.in/article.asp?issn=0970-9290;year=2009;volume=20;issue=2;spage=153;epage=158;aulast=Silvaen_US
dc.subjectPost compositionen_US
dc.subjectpost designen_US
dc.subjectstress distributionen_US
dc.subject.meshAluminum Silicates --chemistry
dc.subject.meshBiomechanics
dc.subject.meshComposite Resins --chemistry
dc.subject.meshComputer Simulation
dc.subject.meshComputer-Aided Design
dc.subject.meshCrowns
dc.subject.meshDental Materials --chemistry
dc.subject.meshDental Porcelain --chemistry
dc.subject.meshDental Prosthesis Design
dc.subject.meshDentin --physiopathology
dc.subject.meshElasticity
dc.subject.meshFinite Element Analysis
dc.subject.meshGlass --chemistry
dc.subject.meshHumans
dc.subject.meshIncisor --physiopathology
dc.subject.meshMaterials Testing
dc.subject.meshMaxilla --physiopathology
dc.subject.meshModels, Biological
dc.subject.meshPost and Core Technique --instrumentation
dc.subject.meshPotassium Compounds --chemistry
dc.subject.meshSoftware
dc.subject.meshStress, Mechanical
dc.subject.meshTitanium --chemistry
dc.subject.meshTooth Root --physiopathology
dc.subject.meshTooth, Nonvital --physiopathology
dc.titleInfluence of different post design and composition on stress distribution in maxillary central incisor: Finite element analysis.en_US
dc.typeArticleen_US
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