Stress analysis in oral obturator prostheses: Imaging photoelastic

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorPesqueira, Aldieris Alves
dc.creatorGoiato, Marcelo Coelho
dc.creatorSantos, Daniela Micheline dos
dc.creatorHaddad, Marcela Filié
dc.creatorAndreotti, Agda Marobo
dc.creatorMoreno, Amália
dc.date2014-05-27T11:29:55Z
dc.date2016-10-25T18:51:03Z
dc.date2014-05-27T11:29:55Z
dc.date2016-10-25T18:51:03Z
dc.date2013-07-08
dc.date.accessioned2017-04-06T02:30:25Z
dc.date.available2017-04-06T02:30:25Z
dc.identifierJournal of Biomedical Optics, v. 18, n. 6, 2013.
dc.identifier1083-3668
dc.identifier1560-2281
dc.identifierhttp://hdl.handle.net/11449/75924
dc.identifierhttp://acervodigital.unesp.br/handle/11449/75924
dc.identifier10.1117/1.JBO.18.6.061203
dc.identifierWOS:000322341100011
dc.identifier2-s2.0-84875810262.pdf
dc.identifier2-s2.0-84875810262
dc.identifier0000-0002-3800-3050
dc.identifierhttp://dx.doi.org/10.1117/1.JBO.18.6.061203
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896649
dc.descriptionMaxillary defects resulting from cancer, trauma, and congenital malformation affect the chewing efficiency and retention of dentures in these patients. The use of implant-retained palatal obturator dentures has improved the self-esteem and quality of life of several subjects. We evaluate the stress distribution of implant-retained palatal obturator dentures with different attachment systems by using the photoelastic analysis images. Two photoelastic models of the maxilla with oral-sinus-nasal communication were fabricated. One model received three implants on the left side of the alveolar ridge (incisive, canine, and first molar regions) and the other did not receive implants. Afterwards, a conventional palatal obturator denture (control) and two implant-retained palatal obturator dentures with different attachment systems (O-ring; bar-clip) were constructed. Models were placed in a circular polariscope and a 100-N axial load was applied in three different regions (incisive, canine, and first molar regions) by using a universal testing machine. The results were photographed and analyzed qualitatively using a software (Adobe Photoshop). The bar-clip system exhibited the highest stress concentration followed by the O-ring system and conventional denture (control). Images generated by the photoelastic method help in the oral rehabilitator planning. © 2013 SPIE.
dc.languageeng
dc.relationJournal of Biomedical Optics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectdental implant
dc.subjectmaxillectomy
dc.subjectphotoelasticity
dc.subjectAdobe Photoshop
dc.subjectCircular polariscope
dc.subjectCongenital malformations
dc.subjectPhoto-elastic analysis
dc.subjectPhotoelastic method
dc.subjectPhotoelastic models
dc.subjectUniversal testing machines
dc.subjectO rings
dc.subjectPhotoelasticity
dc.subjectStress analysis
dc.subjectStress concentration
dc.subjectDental prostheses
dc.subjectdental procedure
dc.subjectelasticity
dc.subjectmaxillofacial prosthesis
dc.subjectmechanical stress
dc.subjectpalatal obturator
dc.subjectphotography
dc.subjectprosthesis
dc.subjectDental Models
dc.subjectElasticity
dc.subjectMaxillofacial Prosthesis
dc.subjectPalatal Obturators
dc.subjectPhotography
dc.subjectProsthesis Design
dc.subjectStress, Mechanical
dc.titleStress analysis in oral obturator prostheses: Imaging photoelastic
dc.typeOtro


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