Photoelastic Stress Analysis of Different Attachment Systems on Implant-Retained and Conventional Palatal Obturator Prostheses

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dc.contributor.authorRibeiro, Paula do Prado [UNESP]
dc.contributor.authorGoiato, Marcelo Coelho [UNESP]
dc.contributor.authorPellizzer, Eduardo Piza [UNESP]
dc.contributor.authorPesqueira, Aldieris Alves [UNESP]
dc.contributor.authorHaddad, Marcela Filie [UNESP]
dc.contributor.authorRosifini Alves-Rezende, Maria Cristina [UNESP]
dc.contributor.authorSantos, Daniela Micheline dos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T18:29:57Z
dc.date.accessioned2014-05-20T13:43:38Z
dc.date.available2013-09-30T18:29:57Z
dc.date.available2014-05-20T13:43:38Z
dc.date.issued2011-03-01
dc.description.abstractBackground: Considering that an increasing number of patients are victims of mutilator surgical resections, these studies are important for treatment success of rehabilitation of patients presenting oronasal communication.Purpose: The aim of this study was to assess the stress distribution through photoelasticity in palatal obturator prostheses with different attachment systems for implants.Methods: Two photoelastic models were obtained from an experimental maxillary model presenting an oronasal communication. One model was fabricated without implant, and the other with 2 implants 10 mm in length inserted in the left crest. Four colorless palatal obturator prostheses were fabricated. One prosthesis presented no attachment system, whereas the remaining prostheses were adapted to 3 attachment systems. The assembly was positioned in a circular polariscope for application of axial load.Results: The results were based on photographic records of stress in the photoelastic model submitted to loading. The records revealed higher stress concentration on the bar-clip system followed by the O'ring/bar-clip and O'ring systems, respectively. A homogeneous stress distribution was observed on the photoelastic model with the mucous-supported prosthesis.Conclusions: The attachment systems generated different characteristics of stress distribution that was concentrated surrounding the implants. The bar-clip system exhibited the highest stress concentration on the alveolar crest.en
dc.description.affiliationUNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 Aracatuba, SP, Brazil
dc.description.affiliationUnespUNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 Aracatuba, SP, Brazil
dc.format.extent523-526
dc.identifierhttp://dx.doi.org/10.1097/SCS.0b013e3182085401
dc.identifier.citationJournal of Craniofacial Surgery. Philadelphia: Lippincott Williams & Wilkins, v. 22, n. 2, p. 523-526, 2011.
dc.identifier.doi10.1097/SCS.0b013e3182085401
dc.identifier.issn1049-2275
dc.identifier.lattes9719883814872582
dc.identifier.lattes5581364193525500
dc.identifier.orcid0000-0002-3800-3050
dc.identifier.urihttp://hdl.handle.net/11449/15241
dc.identifier.wosWOS:000288535800033
dc.language.isoeng
dc.publisherLippincott Williams & Wilkins
dc.relation.ispartofJournal of Craniofacial Surgery
dc.relation.ispartofjcr0.772
dc.relation.ispartofsjr0,448
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPhotoelasticen
dc.subjectimplantsen
dc.subjectobturator prosthesesen
dc.titlePhotoelastic Stress Analysis of Different Attachment Systems on Implant-Retained and Conventional Palatal Obturator Prosthesesen
dc.typeArtigo
dcterms.licensehttp://edmgr.ovid.com/spine/accounts/copyrightTransfer.pdf
dcterms.rightsHolderLippincott Williams & Wilkins
unesp.author.lattes9719883814872582
unesp.author.lattes5581364193525500
unesp.author.lattes2336450644149867[4]
unesp.author.orcid0000-0002-3800-3050[2]
unesp.author.orcid0000-0002-1327-9667[6]
unesp.author.orcid0000-0003-3020-5253[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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Artigos - Materiais Odontológicos e Prótese - FOA