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Finite-Element Analysis of Stress on Dental Implant Prosthesis

dc.contributor.authorRubo, Jose Henrique
dc.contributor.authorSousa, Edson Antonio Capello [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:27:24Z
dc.date.available2014-05-20T13:27:24Z
dc.date.issued2010-01-01
dc.description.abstractBackground:Understanding how clinical variables affect stress distribution facilitates optimal prosthesis design and fabrication and may lead to a decrease in mechanical failures as well as improve implant longevity.Purpose:In this study, the many clinical variations present in implant-supported prosthesis were analyzed by 3-D finite element method.Materials and Method:A geometrical model representing the anterior segment of a human mandible treated with 5 implants supporting a framework was created to perform the tests. The variables introduced in the computer model were cantilever length, elastic modulus of cancellous bone, abutment length, implant length, and framework alloy (AgPd or CoCr). The computer was programmed with physical properties of the materials as derived from the literature, and a 100N vertical load was used to simulate the occlusal force. Images with the fringes of stress were obtained and the maximum stress at each site was plotted in graphs for comparison.Results:Stresses clustered at the elements closest to the loading point. Stress increase was found to be proportional to the increase in cantilever length and inversely proportional to the increase in the elastic modulus of cancellous bone. Increasing the abutment length resulted in a decrease of stress on implants and framework. Stress decrease could not be demonstrated with implants longer than 13 mm. A stiffer framework may allow better stress distribution.Conclusion:The relative physical properties of the many materials involved in an implant-supported prosthesis system affect the way stresses are distributed.en
dc.description.affiliationUniv São Paulo, Bauru Sch Dent, Dept Prosthodont, Bauru, SP, Brazil
dc.description.affiliationSão Paulo State Univ, Sch Engn, Dept Mech Engn, Bauru, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Sch Engn, Dept Mech Engn, Bauru, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipImplant Prosthodontic Unit, Faculty of Dentistry of Toronto
dc.format.extent105-113
dc.identifierhttp://dx.doi.org/10.1111/j.1708-8208.2008.00142.x
dc.identifier.citationClinical Implant Dentistry and Related Research. Malden: Wiley-blackwell, v. 12, n. 2, p. 105-113, 2010.
dc.identifier.doi10.1111/j.1708-8208.2008.00142.x
dc.identifier.issn1523-0899
dc.identifier.lattes8934648262859482
dc.identifier.urihttp://hdl.handle.net/11449/8991
dc.identifier.wosWOS:000277321100004
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofClinical Implant Dentistry and Related Research
dc.relation.ispartofjcr3.097
dc.relation.ispartofsjr1,827
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectfinite-element analysisen
dc.subjectimplant prosthesisen
dc.subjectstress distributionen
dc.titleFinite-Element Analysis of Stress on Dental Implant Prosthesisen
dc.typeArtigo
dcterms.licensehttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1601-0825/homepage/ForAuthors.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes8934648262859482
unesp.author.orcid0000-0003-1595-845X[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Baurupt
unesp.departmentEngenharia Mecânica - FEBpt

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