Long-term fracture load of all-ceramic crowns : effects of veneering ceramic thickness, application techniques, and cooling protocol
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Long-term fracture load of all-ceramic crowns : effects of veneering ceramic thickness, application techniques, and cooling protocol

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Long-term fracture load of all-ceramic crowns : effects of veneering ceramic thickness, application techniques, and cooling protocol

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dc.contributor.author Lima, Júlia-Magalhães-da Costa es
dc.contributor.author Tribst, João Paulo Mendes es
dc.contributor.author Anami, Lilian-Costa es
dc.contributor.author de Melo, Renata-Marques es
dc.contributor.author Moura, Dayanne-Monielle-Duarte es
dc.contributor.author Souza, Rodrigo-Othávio-Assunção es
dc.contributor.author Bottino, Marco Antônio es
dc.date.accessioned 2021-05-11T11:39:45Z
dc.date.available 2021-05-11T11:39:45Z
dc.date.issued 2020 es
dc.identifier.uri https://hdl.handle.net/10550/79319
dc.description.abstract To evaluate, in vitro, the effects of the cooling protocol, application technique, and veneering ceramic thickness on the fracture resistance of ceramic crowns with Y-TZP frameworks. 80 frameworks were made from zirconia by the CAD/CAM technique and divided into 8 groups (n = 10) according to the factors: ?application technique? (stratified-L and pressed -P), ?thickness? (1 mm and 2 mm), and ?cooling protocol? (slow-S and fast-F) of the feldspathic veneering ceramic. After, all crowns were cemented over G10 preparations with resin cement (Panavia F, Kuraray), mechanically cycled (2x106 cycles, 200 N, 3Hz), and subjected to the axial compression resistance test (0.5 mm/min, 10 kN). The data (N) underwent descriptive statistical analysis by 3-way ANOVA and Tukey?s test (5%). Fracture analysis was performed to determine the possible origin of failure. The factors ?cooling protocol? (P=0.0058) and ?application? technique (P=0.0001) influenced the fracture resistance of the crowns. For pressed veneer technique, the P2S (4608.9±464.5). A presented significantly higher results than that P2F(3621.1±523.0)BCD (Tukey?s test). For the stratified technique, this difference was not observed (P>0.05). The thickness of the veneering ceramic was not significant regardless of the cooling protocol and technique (P>0.05). The predominant failure mode was chipping of the ceramic veneer originating in the subsurface. The pressed technique, used with a slow-cooling protocol, leads to the best outcome for the veneering of all-ceramic crowns. es
dc.source Lima, Júlia-Magalhães-da Costa ; Tribst, João Paulo Mendes ; Anami, Lilian-Costa ; de Melo, Renata-Marques ; Moura, Dayanne-Monielle-Duarte ; Souza, Rodrigo-Othávio-Assunção ; Bottino, Marco Antônio. Long-term fracture load of all-ceramic crowns : effects of veneering ceramic thickness, application techniques, and cooling protocol. En: Journal of Clinical and Experimental Dentistry, 12 11 2020: 1078-1085 es
dc.title Long-term fracture load of all-ceramic crowns : effects of veneering ceramic thickness, application techniques, and cooling protocol es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.57352 es

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