Impact of multiple firings on fracture load of veneered zirconia restorations

Impact of multiple firings on fracture load of veneered zirconia restorations

This investigation evaluated the impact of multiple firings during the veneering process of anterior all-ceramic restorations on the fracture load (FL) of zirconia crowns veneered with different ceramics (ZRT, ZRO, HFZ, STR). All-ceramic crowns with anatomically reduced zirconia frameworks were prep...

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Veröffentlicht in:Journal of the mechanical behavior of biomedical materials 2022-06, Vol.130, p.105213-105213, Article 105213
Hauptverfasser: Hensel, Justine, Reise, Michael, Liebermann, Anja, Buser, Ramona, Stawarczyk, Bogna
Format: Artikel
Sprache:eng
Schlagworte:
All-ceramic restoration
Ceramics
Chipping
Crowns
Dental Porcelain
Dental Stress Analysis
Dental Veneers
Fracture load
Leucite ceramic
Materials Testing
Multiple firings
Surface Properties
Thermal properties
Veneering ceramics
Zirconia
Zirconium
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Zusammenfassung:This investigation evaluated the impact of multiple firings during the veneering process of anterior all-ceramic restorations on the fracture load (FL) of zirconia crowns veneered with different ceramics (ZRT, ZRO, HFZ, STR). All-ceramic crowns with anatomically reduced zirconia frameworks were prepared using four different veneering ceramics (N = 192/n = 48 per veneering ceramic). The crowns were fired 2 and 10 times. Half of them were thermocycled (5000 cycles, 5 °C/55 °C, 20s). FL using Voss shear test was measured. Data was analyzed using ANOVA with partial eta squared and post-hoc Scheffé-test as well as t-test and Weibull analysis. Regarding FL, greatest differences were among the number of firings (p
ISSN:1751-6161
1878-0180
DOI:10.1016/j.jmbbm.2022.105213