The influences of accelerated aging on mechanical properties of veneering ceramics used for zirconia restorations

This study evaluated the influences of accelerated aging on the mechanical properties of veneering ceramics used for zirconia frameworks. Five different veneering ceramics for zirconia frameworks were used. Twenty specimens were fabricated for each veneering ceramic. All specimens were divided into...

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Veröffentlicht in:Dental Materials Journal 2016/03/25, Vol.35(2), pp.187-193
Hauptverfasser: LUO, Huinan, TANG, Xuehua, DONG, Zhen, TANG, Hui, NAKAMURA, Takashi, YATANI, Hirofumi
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container_end_page 193
container_issue 2
container_start_page 187
container_title Dental Materials Journal
container_volume 35
creator LUO, Huinan
TANG, Xuehua
DONG, Zhen
TANG, Hui
NAKAMURA, Takashi
YATANI, Hirofumi
description This study evaluated the influences of accelerated aging on the mechanical properties of veneering ceramics used for zirconia frameworks. Five different veneering ceramics for zirconia frameworks were used. Twenty specimens were fabricated for each veneering ceramic. All specimens were divided into two groups. One was subjected to accelerated aging and the other was used as a control. Accelerated aging was performed in distilled water for 5 h at 200ºC and 2 atm. The density, open porosity, surface roughness, three-point flexural strength, and Vickers hardness were measured. The results showed that the density, open porosity, and surface roughness of all examined veneering ceramics were changed by the accelerated aging process. Accelerated aging was also found to have a positive effect on strength and a negative effect on the hardness.
doi_str_mv 10.4012/dmj.2015-115
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subjects Accelerated aging
Ceramics
Density
Dental Porcelain
Dental Veneers
Dentistry
Flexural strength
Materials Testing
Mechanical properties
Porosity
Surface Properties
Surface roughness
Veneering
Veneering ceramics
Zirconia
Zirconium
Zirconium dioxide
title The influences of accelerated aging on mechanical properties of veneering ceramics used for zirconia restorations
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