Effect of Surface Glaze Treatment and Mechanical Polishing on the Color Stability of Two Types of Cad/Cam Ceramics

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS

Glass and Ceramics Pub Date : 2023-12-22 DOI:10.1007/s10717-023-00621-6

Sadaf Ghazaee, Elnaz Moslehifard, Tahereh Ghaffari, Farzad Nasirpouri

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Abstract

The effect of immersion in a coffee drink solution on the color stability of two CAD/CAM ceramic restorations was investigated in this in vitro study. To this end, zirconia-reinforced lithium silicate (ZLS) and lithium disilicate (LDS) glass-ceramic blocks were surface-treated using mechanical polishing and glazing techniques. In addition, their color was examined before and after immersion in a coffee solution using a spectrophotometer, and the color changes were evaluated. A two-way analysis of variance (ANOVA) was used to examine the color changes. The material type significantly influenced color changes (P < 0.001). After glazing and mechanical polishing, LDS exhibited considerably less color change in both groups than ZLS. In both types of ceramics, the glazed group experienced less color variation than the mechanically polished group. Color changes were clinically acceptable across all groups. The glazing surface treatment produced superior color stability than the mechanical polishing technique. LDS exhibited more color stability than ZLS in both surface treatments.

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表面釉处理和机械抛光对两种 Cad/Cam 陶瓷颜色稳定性的影响

本体外研究调查了浸泡在咖啡饮料溶液中对两种 CAD/CAM 陶瓷修复体颜色稳定性的影响。为此，使用机械抛光和上釉技术对氧化锆增强硅酸锂（ZLS）和二硅酸锂（LDS）玻璃陶瓷块进行了表面处理。此外，还使用分光光度计检测了它们在咖啡溶液中浸泡前后的颜色，并对颜色变化进行了评估。采用双因素方差分析（ANOVA）来检验颜色变化。材料类型对颜色变化有明显影响（P < 0.001）。在上釉和机械抛光后，两组中 LDS 的颜色变化都比 ZLS 少得多。在两种类型的陶瓷中，上釉组的颜色变化均小于机械抛光组。所有组别的颜色变化在临床上都是可以接受的。与机械抛光技术相比，上釉表面处理的颜色稳定性更好。在两种表面处理方法中，LDS 的颜色稳定性均高于 ZLS。

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来源期刊

Glass and Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass and Ceramics reports on advances in basic and applied research and plant production techniques in glass and ceramics. The journal''s broad coverage includes developments in the areas of silicate chemistry, mineralogy and metallurgy, crystal chemistry, solid state reactions, raw materials, phase equilibria, reaction kinetics, physicochemical analysis, physics of dielectrics, and refractories, among others.