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dc.contributor.authorGoiato, Marcelo Coelho [UNESP]
dc.contributor.authorMatheus, Henrique Rinaldi [UNESP]
dc.contributor.authorde Medeiros, Rodrigo Antonio [UNESP]
dc.contributor.authordos Santos, Daniela Micheline [UNESP]
dc.contributor.authorBitencourt, Sandro Basso [UNESP]
dc.contributor.authorPesqueira, Aldiéris Alves [UNESP]
dc.date.accessioned2018-12-11T17:30:34Z
dc.date.available2018-12-11T17:30:34Z
dc.date.issued2017-05-01
dc.identifierhttp://dx.doi.org/10.1016/j.prosdent.2016.07.025
dc.identifier.citationJournal of Prosthetic Dentistry, v. 117, n. 5, p. 685-689, 2017.
dc.identifier.issn0022-3913
dc.identifier.urihttp://hdl.handle.net/11449/178475
dc.description.abstractStatement of problem The rehabilitation of patients after a maxillectomy involves the use of an obturator to seal oral-nasal-sinus communication and to facilitate mastication, swallowing, and speech. Purpose The purpose of this in vitro study was to evaluate different attachment systems used for implant-retained obturators at dissipation loads and under shear forces. Material and methods Photoelastic models were fabricated with 3 external hexagon implants at the incisor, canine, and first molar regions. Subsequently, overdentures were made, and metal hooks were placed at the incisor and first molar regions to displace the prostheses in the vertical, anterior, and posterior directions, with a constant speed of 50 mm/min. A photoelastic model with an O-ring or bar-clip system was placed in a circular polariscope, and tested with a universal testing machine. The images were recorded and high-intensity fringes were counted using software. For strain gauge analysis, each strain gauge was placed horizontally at the mesial and distal sides of the implants. The registered strains were submitted to 2-way ANOVA (α=.05). Results The O-ring showed the lowest number of high-intensity fringes in photoelastic imaging, while the strain gauge analysis showed the lowest stress values in the bar-clip group (P=.007). Conclusions The stress around titanium implant necks was more damaging to surrounding bone, while the bar-clip attachment system had a better biomechanical performance. The bar-clip presented the lowest strain values around the dental implants and few high-intensity fringes.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent685-689
dc.language.isoeng
dc.relation.ispartofJournal of Prosthetic Dentistry
dc.sourceScopus
dc.titleA photoelastic and strain gauge comparison of two attachments for obturator prosthesesen
dc.typeArtigo
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationProfessor Aracatuba Dental School São Paulo State University (UNESP)
dc.description.affiliationGraduate student Aracatuba Dental School Sao Paulo State University (UNESP)
dc.description.affiliationPostgraduate student Aracatuba Dental School São Paulo State University (UNESP)
dc.description.affiliationUnespProfessor Aracatuba Dental School São Paulo State University (UNESP)
dc.description.affiliationUnespGraduate student Aracatuba Dental School Sao Paulo State University (UNESP)
dc.description.affiliationUnespPostgraduate student Aracatuba Dental School São Paulo State University (UNESP)
dc.identifier.doi10.1016/j.prosdent.2016.07.025
dc.rights.accessRightsAcesso aberto
dc.description.sponsorshipIdFAPESP: 2014/04919-1
dc.identifier.scopus2-s2.0-85006064619
dc.identifier.file2-s2.0-85006064619.pdf
unesp.author.lattes2336450644149867[6]
unesp.author.orcid0000-0003-3020-5253[6]
dc.relation.ispartofsjr1,087
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