Survival rate, load to fracture, and finite element analysis of incisors and canines restored with ceramic veneers having varied preparation design

dc.contributorUniv Fed Pelotas
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de Sergipe (UFS)
dc.creatorBergoli, Cesar Dalmolin
dc.creatorMeira, Josete Barbosa Cruz
dc.creatorValandro, Luiz Felipe
dc.creatorBottino, Marcos Antonio [UNESP]
dc.date2015-03-18T15:56:13Z
dc.date2015-03-18T15:56:13Z
dc.date2014-09-01
dc.date.accessioned2023-09-12T03:12:34Z
dc.date.available2023-09-12T03:12:34Z
dc.identifierhttp://dx.doi.org/10.2341/13-179
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.identifier10.2341/13-179
dc.identifierWOS:000341224700011
dc.identifier9234456003563666
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8766949
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.descriptionUniv Fed Pelotas, Sch Dent, Pelotas, Brazil
dc.descriptionSao Paulo State Univ USP, Biomat & Oral Biol Dept, Sao Paulo, Brazil
dc.descriptionUniv Fed Santa Maria, BR-97119900 Santa Maria, RS, Brazil
dc.descriptionSao Paulo State Univ UNESP, Sao Jose Dos Campos, Brazil
dc.descriptionSao Paulo State Univ UNESP, Sao Jose Dos Campos, Brazil
dc.format530-540
dc.languageeng
dc.publisherOperative Dentistry Inc
dc.relationOperative Dentistry
dc.relation2.130
dc.relation1,180
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleSurvival rate, load to fracture, and finite element analysis of incisors and canines restored with ceramic veneers having varied preparation design
dc.typeArtigo


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