■半透明和光学特性显着影响陶瓷修复体的美观性。根据制造商的说法,通过基质烧制工艺将新的维氏晶体引入新型陶瓷高级二硅酸锂中,可以增强材料的强度和美学质量。
■四种类型的CAD/CAM陶瓷;二硅酸锂(LD),白云母增强(LR),高级二硅酸锂(ALD),和氧化锆增强的硅酸锂(ZLS)暴露于不同的染色溶液(茶,可乐,咖啡,和蒸馏水)。每种陶瓷类型有120个样本,根据厚度(0.5毫米,1mm,和1.5毫米)。热循环后测量颜色变化(ΔE00)和半透明参数(TP00),在暴露于染色溶液1、7和30天后,采用分光光度法评估ΔE00和TP00。
■ZLS表现出最低的颜色稳定性,而锂LD和ALD显示最高。厚度显著影响颜色稳定性,0.5毫米的厚度显示最小的变化。曝光的持续时间也会影响颜色变化,30天导致了最显著的转变。LD表现出最高的半透明性。与对照组相比,咖啡和茶引起半透明性和颜色稳定性的更明显降低。
■材料结构,厚度,染色溶液,和曝光时间显着影响CAD/CAM陶瓷的颜色稳定性和半透明性,LD和ALD表现出优异的颜色稳定性和LD表现出最高的半透明性。
UNASSIGNED: Translucency and optical characteristics significantly affect the aesthetics of ceramic restorations. The introduction of new virgilite crystals to novel ceramic advanced lithium disilicate through a matrix firing process enhances the material\'s strength and aesthetic quality according to the manufacturer.
UNASSIGNED: Four types of CAD/CAM ceramics; lithium disilicate (LD), leucite reinforced (LR), advanced lithium disilicate (ALD), and zirconia-reinforced lithium silicate (ZLS) exposed to different staining solutions (tea, cola, coffee, and distilled water). Each ceramic type had 120 specimens, divided into subgroups based on
thickness (0.5 mm, 1 mm, and 1.5 mm). Color changes (ΔE00) and translucency parameters (TP00) were measured after thermocycling, and spectrophotometry was employed to evaluate ΔE00 and TP00 after 1, 7, and 30 days of exposure to the staining solutions.
UNASSIGNED: ZLS exhibited the lowest color stability, while lithium LD and ALD displayed the highest.
Thickness significantly affected color stability, with 0.5 mm
thickness showing the least change. The duration of exposure also impacted color changes, with 30 days causing the most significant shift. LD demonstrated the highest translucency. Coffee and tea induced more pronounced reductions in translucency and color stability compared to the control group.
UNASSIGNED: Material structure,
thickness, staining solution, and exposure duration significantly influenced the color stability and translucency of CAD/CAM ceramics, with LD and ALD demonstrating superior color stability and LD exhibiting the highest translucency.