| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7207865 | Journal of the Mechanical Behavior of Biomedical Materials | 2016 | 10 Pages |
Abstract
The following study aimed to evaluate the effect of grinding and low-temperature aging on the fatigue limit of Y-TZP ceramics for frameworks and monolithic restorations. Disc specimens from each ceramic material, Lava Frame (3M ESPE) and Zirlux FC (Ivoclar Vivadent) were manufactured according to ISO:6872-2008 and assigned in accordance with two factors: (1) “surface treatment”-without treatment (as-sintered, Ctrl), grinding with coarse diamond bur (181 µm; Grinding); and (2) “low-temperature aging (LTD)” - presence and absence. Grinding was performed using a contra-angle handpiece under constant water-cooling. LTD was simulated in an autoclave at 134 °C under 2-bar pressure for 20 h. Mean flexural fatigue limits (20,000 cycles) were determined under sinusoidal loading using stair case approach. For Lava ceramic, it was observed a statistical increase after grinding procedure and different behavior after LTD stimuli (Ctrl
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Biomedical Engineering
Authors
G.K.R. Pereira, T. Silvestri, M. Amaral, M.P. Rippe, C.J. Kleverlaan, L.F. Valandro,