Evaluation of Stress Patterns Produced by Implant-Retained Overdentures and Implant-Retained Fixed Partial Denture

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorMazaro, José Vitor Quinelli
dc.creatorGennari Filho, Humberto
dc.creatorVedovatto, Eduardo
dc.creatorPellizzer, Eduardo Piza
dc.creatorRezende, Maria Cristina Rosifini Alves
dc.creatorZavanelli, Adriana Cristina
dc.date2013-09-30T18:29:55Z
dc.date2014-05-20T13:43:38Z
dc.date2016-10-25T16:58:09Z
dc.date2013-09-30T18:29:55Z
dc.date2014-05-20T13:43:38Z
dc.date2016-10-25T16:58:09Z
dc.date2011-11-01
dc.date.accessioned2017-04-05T20:47:29Z
dc.date.available2017-04-05T20:47:29Z
dc.identifierJournal of Craniofacial Surgery. Philadelphia: Lippincott Williams & Wilkins, v. 22, n. 6, p. 2153-2157, 2011.
dc.identifier1049-2275
dc.identifierhttp://hdl.handle.net/11449/15235
dc.identifierhttp://acervodigital.unesp.br/handle/11449/15235
dc.identifier10.1097/SCS.0b013e3182323e29
dc.identifierWOS:000297741900061
dc.identifier0000-0002-1327-9667
dc.identifierhttp://dx.doi.org/10.1097/SCS.0b013e3182323e29
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/862272
dc.descriptionThe purposes of this study were to photoelastically measure the biomechanical behavior of 4 implants retaining different cantilevered bar mandibular overdenture designs and to compare a fixed partial denture (FPD). A photoelastic model of a human edentulous mandible was fabricated, which contained 4 screw-type implants (3.75 x 10 mm) embedded in the parasymphyseal area. An FPD and 3 overdenture designs with the following attachments were evaluated: 3 plastic Hader clips, 1 Hader clip with 2 posterior resilient cap attachments, and 3 ball/O-ring attachments. Vertical occlusal forces of 100 N were applied between the central incisor and unilaterally to the right and left second premolars and second molars. Stresses that developed in the supporting structure were monitored photoelastically and recorded photographically. The results showed that the anterior loading, the overdenture with 3 plastic Hader clips, displayed the largest stress concentration at the medium implant. With premolar loading, the FPD and overdenture with 3 plastic Hader clips displayed the highest stresses to the ipsilateral terminal implant. With molar loading, the overdenture with 3 ball/O-ring attachments displayed the most uniform stress distribution in the posterior edentulous ridge, with less overloading in the terminal implant. It was concluded that vertical forces applied to the bar-clip overdenture and FPD created immediate stress patterns of greater magnitude and concentration on the ipsilateral implants, whereas the ball/O-ring attachments transferred minimal stress to the implants. The increased cantilever in the FPD caused the highest stresses to the terminal implant.
dc.languageeng
dc.publisherLippincott Williams & Wilkins
dc.relationJournal of Craniofacial Surgery
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDental implants
dc.subjectimplant-supported dental prosthesis
dc.subjectdental stress analysis
dc.titleEvaluation of Stress Patterns Produced by Implant-Retained Overdentures and Implant-Retained Fixed Partial Denture
dc.typeOtro


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