Stress distribution in implant-supported prosthesis with external and internal implant-abutment connections

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorGoiato, Marcelo Coelho
dc.creatorPesqueira, Aldieris Alves
dc.creatorFalcón-Antenucci, Rosse Mary
dc.creatorSantos, Daniela Micheline dos
dc.creatorHaddad, Marcela Filié
dc.creatorBannwart, Lisiane Cristina
dc.creatorMoreno, Amália
dc.date2014-05-27T11:28:37Z
dc.date2016-10-25T18:45:10Z
dc.date2014-05-27T11:28:37Z
dc.date2016-10-25T18:45:10Z
dc.date2013-03-01
dc.date.accessioned2017-04-06T02:15:54Z
dc.date.available2017-04-06T02:15:54Z
dc.identifierActa Odontologica Scandinavica, v. 71, n. 2, p. 283-288, 2013.
dc.identifier0001-6357
dc.identifier1502-3850
dc.identifierhttp://hdl.handle.net/11449/74757
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74757
dc.identifier10.3109/00016357.2012.672823
dc.identifierWOS:000315413000001
dc.identifier2-s2.0-84874494180
dc.identifier0000-0002-3800-3050
dc.identifierhttp://dx.doi.org/10.3109/00016357.2012.672823
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895517
dc.descriptionObjective. This study aimed to investigate the stress distribution in screwed implant-supported prostheses with different implant-abutment connections by using a photoelastic analysis. Materials and methods. Four photoelastic models were fabricated in PL-2 resin and divided according to the implant-abutment connection (external hexagon (EH) and Morse taper (MT) implants (3.75 × 11.5 mm)) and the number crowns (single and 3-unit piece). Models were positioned in a circular polariscope and 100-N axial and oblique (45) loading were applied in the occlusal surface of the crowns by using a universal testing machine. The stresses were photographically recorded and qualitatively analyzed using software (Adobe Photoshop). Results. Under axial loading, the MT implants exhibited a lower number of fringes for single-unit crowns than EH implants, whereas for a 3-unit piece the MT implants showed a higher number of fringes vs EH implants. The oblique loading increased the number of fringes for all groups. Conclusion. In conclusion, the MT implant-abutment connection reduced the amount of stress in single-unit crowns, for 3-unit piece crowns the amount of stress was lower using an external hexagon connection. The stress pattern was similar for all groups. Oblique loading promoted a higher stress concentration than axial loading. © Informa Healthcare.
dc.languageeng
dc.relationActa Odontologica Scandinavica
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBiomechanics
dc.subjectDental implants
dc.subjectFixed prosthesis
dc.subjectPhotoelastic stress analysis
dc.subjectScrew retained
dc.subjectbiomechanics
dc.subjectdental abutment
dc.subjecthuman
dc.subjecttheoretical model
dc.subjecttooth implant
dc.subjectDental Implant-Abutment Design
dc.subjectDental Implants
dc.subjectHumans
dc.subjectModels, Theoretical
dc.titleStress distribution in implant-supported prosthesis with external and internal implant-abutment connections
dc.typeOtro


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