Analysis of residual stress and hardness in regions of pre-manufactured and manual bends in fixation plates for maxillary advancement

dc.contributor.authorAraújo, Marcelo Marotta [UNESP]
dc.contributor.authorLauria, Andrezza
dc.contributor.authorMendes, Marcelo Breno Meneses
dc.contributor.authorClaro, Ana Paula Rosifini Alves [UNESP]
dc.contributor.authorClaro, Cristiane Aparecida de Assis
dc.contributor.authorMoreira, Roger William Fernandes
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade de Taubaté (UNITAU)
dc.date.accessioned2015-12-07T15:35:17Z
dc.date.available2015-12-07T15:35:17Z
dc.date.issued2015
dc.description.abstractThe aim of this study was to analyze, through Vickers hardness test and photoelasticity analysis, pre-bent areas, manually bent areas, and areas without bends of 10-mm advancement pre-bent titanium plates (Leibinger system). The work was divided into three groups: group I-region without bend, group II-region of 90° manual bend, and group III-region of 90° pre-fabricated bends. All the materials were evaluated through hardness analysis by the Vickers hardness test, stress analysis by residual images obtained in a polariscope, and photoelastic analysis by reflection during the manual bending. The data obtained from the hardness tests were statistically analyzed using ANOVA and Tukey's tests at a significance level of 5 %. The pre-bent plate (group III) showed hardness means statistically significantly higher (P < 0.05) than those of the other groups (I-region without bends, II-90° manually bent region). Through the study of photoelastic reflection, it was possible to identify that the stress gradually increased, reaching a pink color (1.81 δ / λ), as the bending was performed. A general analysis of the results showed that the bent plate region of pre-bent titanium presented the best results.en
dc.description.affiliationDepartment of Oral and Maxillofacial Surgery, School of Dentistry of São José dos Campos, State University of São Paulo (UNESP), São José dos Campos, SP, Brazil
dc.description.affiliationDepartment of Oral and Maxillofacial Surgery, School of Dentistry of Piracicaba, State University of Campinas (UNICAMP), Av. Limeira, 901, PO Box 52, CEP 13414-903 Piracicaba, SP, Brazil
dc.description.affiliationDepartment of Materials, School of Engineering of Guaratinguetá, State University of São Paulo (UNESP), Guaratinguetá, SP, Brazil
dc.description.affiliationDepartment of Orthodontics, School of Dentistry, University of Taubaté, Taubaté, SP, Brazil
dc.description.affiliationDepartment of Oral and Maxillofacial Surgery, School of Dentistry of Piracicaba, State University of Campinas (UNICAMP), Piracicaba, SP, Brazil
dc.description.affiliationUnespDepartment of Oral and Maxillofacial Surgery, School of Dentistry of São José dos Campos, State University of São Paulo (UNESP), São José dos Campos, SP, Brazil
dc.format.extent369-373
dc.identifierhttp://dx.doi.org/10.1007/s10006-015-0504-7
dc.identifier.citationOral And Maxillofacial Surgery, v. 19, n. 4, p. 369-373, 2015.
dc.identifier.doi10.1007/s10006-015-0504-7
dc.identifier.issn1865-1569
dc.identifier.lattes2070995716965558
dc.identifier.pubmed25944727
dc.identifier.urihttp://hdl.handle.net/11449/131425
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofOral And Maxillofacial Surgery
dc.rights.accessRightsAcesso restrito
dc.sourcePubMed
dc.subjectBone platesen
dc.subjectHardness testingen
dc.subjectMaxillary osteotomyen
dc.titleAnalysis of residual stress and hardness in regions of pre-manufactured and manual bends in fixation plates for maxillary advancementen
dc.typeArtigo
dcterms.rightsHolderSpringer
unesp.author.lattes2070995716965558
unesp.author.lattes2302418953025459[4]
unesp.author.orcid0000-0003-3353-4247[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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