Evaluation of the structural behavior of three and four implant-supported fixed prosthetic restorations by finite element analysis.

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dc.citation.journalTitleJournal of prosthodontic researcheng
dc.contributor.authorCorrea S
dc.contributor.authorIvancik J
dc.contributor.authorIsaza JF
dc.contributor.authorNaranjo M
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.contributor.researchgroupBioingeniería GIB (CES – EAFIT)spa
dc.date.accessioned2021-04-12T18:59:05Z
dc.date.available2021-04-12T18:59:05Z
dc.date.issued2012-04-01
dc.description.abstractPURPOSE: There is much controversy about the minimum number of implants and maximum cantilever length in mandible prosthetic restoration. Finite elements analysis of three and four implant-supported prostheses was performed to determine the stresses in the superstructure, implants and cortical bone and, therefore, the failure prediction for each restoration. METHODS: An edentulous mandible was modeled from CT scan images. Two finite element models of three and four implant-supported prostheses with cantilever lengths of 10 and 15 mm were created. Occlusal loads in different parts of the superstructure were applied and shear and normal stresses were calculated. RESULTS: Two failure criteria were analyzed: the von Mises criterion for isotropic materials (superstructure and implants) and the Tsai-Wu criterion for transversely isotropic material (cortical bone). Both criteria predict failure in the three implant-supported prosthesis for all cases analyzed. The same applies for the four-implant prosthesis of 15 mm cantilever length. However, four implants and a cantilever length of 10mm passed the failure criteria and were considered safe. CONCLUSIONS: The results from the patient analyzed showed that fixed support prostheses on three implants are not recommended from a structural point of view because they do not adequately support occlusal loads. Excessive stress in the superstructure and the cortical bone can be expected, which would anticipate the failure of the restoration. Fixed support prostheses on four implants with a cantilever length of 10mm properly resist occlusal loading.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1535
dc.identifier.doi10.1016/j.jpor.2011.07.001
dc.identifier.issn18831958
dc.identifier.issn22124632
dc.identifier.otherWOS;000209156800005
dc.identifier.otherPUBMED;22104623
dc.identifier.otherSCOPUS;2-s2.0-84869881910
dc.identifier.urihttp://hdl.handle.net/10784/28136
dc.language.isoeng
dc.publisherELSEVIER IRELAND LTD
dc.relationDOI;10.1016/j.jpor.2011.07.001
dc.relationWOS;000209156800005
dc.relationPUBMED;22104623
dc.relationSCOPUS;2-s2.0-84869881910
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84869881910&doi=10.1016%2fj.jpor.2011.07.001&partnerID=40&md5=920a8f2dd0d689762d371a14153d08db
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1883-1958
dc.sourceJournal of prosthodontic research
dc.subjectarticleeng
dc.subjectdental procedureeng
dc.subjectfinite element analysiseng
dc.subjecthistologyeng
dc.subjecthumaneng
dc.subjectmandibleeng
dc.subjectmasticationeng
dc.subjecttooth implanteng
dc.subjecttooth prosthesiseng
dc.subjectBite Forceeng
dc.subjectDental Implantseng
dc.subjectDental Modelseng
dc.subjectDental Prosthesiseng
dc.subjectImplant-Supportedeng
dc.subjectDental Stress Analysiseng
dc.subjectFinite Element Analysiseng
dc.subjectHumanseng
dc.subjectMandibleeng
dc.titleEvaluation of the structural behavior of three and four implant-supported fixed prosthetic restorations by finite element analysis.eng
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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