ABSTRACT The goal of this study is to examine specific optical effects of multilayered and coloured monolithic zirconia considering thickness and substrates of different colours using one of the most advanced spectrophotometers of the world. Multilayered zirconia specimens were used for the study with the thickness range of 0.5–2.5 mm and six types of substrate materials and three types of metal substrates. Measurements were carried out at Budapest Technical University with a PerkinElmer®Lambda1050UV/Vis/NIR spectrophotometer. The substrate colour and the thickness of zirconia affects the optical results, with special regard to colour perceptibility and acceptability. Monochromatic and multilayer zirconia show both similarities and discrepancies in behaviour, i.e. spectral reflectance and ΔE. Owing to the multi-coloured characteristics of multilayered zirconia the optical effect of the substrate less predictable than in the case of monochromatic zirconia thus requiring more detailed planning and implementation.

中文翻译：

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不同基材单片多层氧化锆光学效应的分光光度法检测

摘要 本研究的目标是使用世界上最先进的分光光度计之一，在考虑不同颜色的厚度和基材的情况下，检查多层和有色整体氧化锆的特定光学效应。多层氧化锆试样用于研究，厚度范围为 0.5-2.5 毫米，六种基材材料和三种金属基材。测量在布达佩斯技术大学使用 PerkinElmer®Lambda1050UV/Vis/NIR 分光光度计进行。基材颜色和氧化锆的厚度会影响光学结果，特别是颜色的可感知性和可接受性。单色和多层氧化锆在行为（即光谱反射率和 ΔE）上表现出相似性和差异性。