
doi: 10.4012/dmj.2019-109
pmid: 31511477
This review describes low temperature degradation (LTD), discoloration, and erosion of high translucent dental zirconia and discusses its chemical durability in comparison with other CAD/CAM materials. The LTD of zirconia strongly depended on the firing temperature, yttria content, surface treatment, and heat treatment. Glass ceramics for CAD/CAM were remarkably etched in a lactic acid at 60°C, KOH solution at 60°C, and saline solution at 90°C, whereas zirconia showed no changes in these solutions. Glass ceramics and hybrid resins for CAD/CAM showed significant discoloration in a red wine and rhodamine B solution at 37°C, whereas zirconia showed no discolorations in either solution. It was concluded that high translucent dental zirconia has the highest chemical durability among dental CAD/CAM materials.
Ceramics, Surface Properties, Dental Porcelain, Dental Materials, Dentistry, Chemical durability, Materials Testing, Discoloration, Zirconia, Computer-Aided Design, Low temperature degradation, Zirconium
Ceramics, Surface Properties, Dental Porcelain, Dental Materials, Dentistry, Chemical durability, Materials Testing, Discoloration, Zirconia, Computer-Aided Design, Low temperature degradation, Zirconium
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