dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBergoli, Cesar Dalmolin
dc.creatorMeira, Josete Barbosa Cruz
dc.creatorValandro, Luiz Felipe
dc.creatorBottino, Marcos Antonio
dc.date2015-03-18T15:56:13Z
dc.date2016-10-25T20:35:25Z
dc.date2015-03-18T15:56:13Z
dc.date2016-10-25T20:35:25Z
dc.date2014-09-01
dc.date.accessioned2017-04-06T07:17:57Z
dc.date.available2017-04-06T07:17:57Z
dc.identifierOperative Dentistry. Indianapolis: Operative Dentistry Inc, v. 39, n. 5, p. 530-540, 2014.
dc.identifier0361-7734
dc.identifierhttp://hdl.handle.net/11449/117465
dc.identifierhttp://acervodigital.unesp.br/handle/11449/117465
dc.identifier10.2341/13-179
dc.identifierWOS:000341224700011
dc.identifierhttp://dx.doi.org/10.2341/13-179
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/928112
dc.descriptionPurpose: To evaluate the survival rate, success rate, load to fracture, and finite element analysis (FEA) of maxillary central incisors and canines restored using ceramic veneers and varying preparation designs.Methods and Materials: Thirty human maxillary central incisors and 30 canines were allocated to the following four groups (n=15) based on the preparation design and type of tooth: Gr1 = central incisor with a conservative preparation; Gr2 = central incisor with a conventional preparation with palatal chamfer; Gr3 = canine with a conservative preparation; Gr4 = canine with a conventional preparation with palatal chamfer. Ceramic veneers (lithium disilicate) were fabricated and adhesively cemented (Variolink Veneer). The specimens were subjected to 4 x 106 mechanical cycles and evaluated at every 500,000 cycles to detect failures. Specimens that survived were subjected to a load to fracture test. Bidimensional models were modeled (Rhinoceros 4.0) and evaluated (MSC.Patrans 2005r2 and MSC.Marc 2005r2) on the basis of their maximum principal stress (MPS) values. Survival rate values were analyzed using the Kaplan-Meier test (alpha = 0.05) and load to fracture values were analyzed using the Student t-test (alpha = 0.05).Results: All groups showed 100% survival rates. The Student t-test did not show any difference between the groups for load to fracture. FEA showed higher MPS values in the specimens restored using veneers with conventional preparation design with palatal chamfer.Conclusion: Preparation design did not affect the fracture load of canines and central incisors, but the veneers with conventional preparation design with palatal chamfer exhibited a tendency to generate higher MPS values.
dc.languageeng
dc.publisherOperative Dentistry Inc
dc.relationOperative Dentistry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleSurvival rate, load to fracture, and finite element analysis of incisors and canines restored with ceramic veneers having varied preparation design
dc.typeOtro


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