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Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques : photoelastic and strain gauge analyses

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Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques : photoelastic and strain gauge analyses

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dc.contributor.author de Medeiros, Rodrigo-Antonio es
dc.contributor.author dos Santos, Daniela Micheline es
dc.contributor.author Pesqueira, Aldiéris Alves es
dc.contributor.author Campaner, Marcio es
dc.contributor.author Bittencourt, Sandro es
dc.contributor.author da Silva, Emily-Vivianne-Freitas es
dc.contributor.author Goiato, Marcelo Coelho es
dc.date.accessioned 2019-11-22T12:22:02Z
dc.date.available 2019-11-22T12:22:02Z
dc.date.issued 2019 es
dc.identifier.citation de Medeiros, Rodrigo-Antonio ; dos Santos, Daniela Micheline ; Pesqueira, Aldiéris Alves ; Campaner, Marcio ; Bittencourt, Sandro ; da Silva, Emily-Vivianne-Freitas ; Goiato, Marcelo Coelho. Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques : photoelastic and strain gauge analyses. En: Journal of Clinical and Experimental Dentistry, 11 9 2019: 807-813 es
dc.identifier.uri https://hdl.handle.net/10550/72319
dc.description.abstract The aim of this study was to evaluate the distribution of stress in complete fixed mandibular prostheses with infrastructures (IE) fabricated with different materials and techniques, under compressive force. A model of an edentulous mandible, which received five 4x11 mm external hexagon implants between the mental foramens, was fabricated. The groups were divided into: Group I - IE in nickel-chromium with an acrylic resin occlusal coating; Group II ? IE in nickel-chromium with a ceramic occlusal coating; Group III ? IE milled in zirconia with a ceramic coating. For the photoelastic methodology, 70 N axial loads were applied in three regions. Photographic images were taken and analyzed according to the number of high-intensity fringes. For the strain gauge methodology, the measurement of stresses was performed in two distinct regions. The same compression tests described earlier were then performed. The registered stress values were grouped in tables and submitted to two-factor variance analysis (ANOVA) and the Tukey test with 5% significance. The results of the two methodologies demonstrated smaller stress values for Group I, when compared to the other groups. It was possible to conclude that the complete fixed prostheses, with infrastructures cast in metal and acrylic occlusal coating, demonstrated better biomechanical results. es
dc.title Stress distribution in fixed mandibular prostheses fabricated by CAD/CAM and conventional techniques : photoelastic and strain gauge analyses es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.56067 es
dc.type.hasVersion VoR es_ES

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