Influence of Thickness in the Color Masking Ability of Different Types of Computer-Aided Design and Manufacturing Ceramics

IF 2.4 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical and Experimental Dental Research Pub Date : 2026-08-19 DOI:10.1002/cre2.70438

Seyede Mohaddeseh Hosseini Kalej, Behnaz Esmaeili, Ghazaleh Ahmadi Zenouz, Hemmat Gholinia

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Abstract

Objectives

Tooth discoloration is a major esthetic concern in cosmetic dentistry. This study investigated the color-masking ability of four CAD/CAM ceramics and the influence of material type and thickness on their optical properties.

Materials and Methods

A total of 120 A1-shade CAD/CAM ceramic specimens were prepared from Vitablocs Mark II, Vita Suprinity PC, Celtra Duo, and Ceramill Zolid FX (n = 30 per material). Each material was fabricated in three thicknesses (0.5, 1, and 1.5 mm; n = 10). Color-masking ability was evaluated using A1 and A5 composite substrates. Translucency of 1-mm specimens was assessed against black and white backgrounds. CIELab values were measured using a spectrophotometer, and color differences (ΔE^∗_ab, ΔE₀₀) and translucency parameters (TP, TP₀₀) were calculated. Data were analyzed using one-way and two-way ANOVA and Tukey's test (p < 0.05).

Results

Ceramic thickness significantly influenced color differences, with thicker ceramics exhibiting lower color differences and greater masking ability (p < 0.001). Significant differences in translucency parameters and color difference values were also observed among the tested ceramics (p < 0.001). Zolid FX at 1.5 mm showed the highest color-masking ability, whereas Vita Suprinity at 0.5 mm showed the lowest.

Conclusions

The study showed that increasing the thickness of ceramic materials significantly improved their ability to mask underlying colors, highlighting the importance of material depth in achieving esthetic results. Furthermore, it was found that a thickness of at least 1 mm is required for zirconia ceramics (ZF) and 1.5 mm for VM ceramics to effectively mask an A5 background shade. In contrast, Celtra (CD) and Vita Suprinity (VS) ceramics did not demonstrate adequate color masking effectiveness at any of the tested thicknesses, indicating their drawbacks for clinical scenarios where optimal esthetic outcomes are essential.

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厚度对不同类型计算机辅助设计制造陶瓷遮盖能力的影响

目的牙齿变色是牙科美容中一个主要的美学问题。研究了四种CAD/CAM陶瓷的掩色能力，以及材料类型和厚度对其光学性能的影响。材料和方法采用Vitablocs Mark II、Vita Suprinity PC、Celtra Duo和Ceramill Zolid FX共制备120个A1-shade CAD/CAM陶瓷样品（每种材料n = 30）。每种材料制作三种厚度（0.5、1和1.5 mm; n = 10）。采用A1和A5复合衬底对颜色掩蔽能力进行评价。在黑白背景下评估1毫米标本的半透明性。使用分光光度计测量CIELab值，并计算色差（ΔE * ab， ΔE00）和半透明参数（TP, TP00）。数据分析采用单因素和双因素方差分析及Tukey检验（p < 0.05）。结果陶瓷厚度对颜色差异有显著影响，越厚的陶瓷颜色差异越小，掩盖能力越强（p < 0.001）。在被测陶瓷中，半透明参数和色差值也存在显著差异（p < 0.001）。Zolid FX在1.5 mm时表现出最高的颜色掩盖能力，而Vita Suprinity在0.5 mm时表现出最低的颜色掩盖能力。研究表明，增加陶瓷材料的厚度可以显著提高其掩盖潜在颜色的能力，突出了材料深度在达到美学效果方面的重要性。此外，研究发现氧化锆陶瓷（ZF）的厚度至少为1mm， VM陶瓷的厚度至少为1.5 mm，以有效地掩盖A5背景阴影。相比之下，Celtra （CD）和Vita Suprinity （VS）陶瓷在任何测试厚度下都没有表现出足够的遮盖效果，这表明它们在临床场景中的缺点，最佳的美学结果是必不可少的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical and Experimental Dental Research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.30

自引率

5.60%

发文量

165

审稿时长

26 weeks

期刊介绍： Clinical and Experimental Dental Research aims to provide open access peer-reviewed publications of high scientific quality representing original clinical, diagnostic or experimental work within all disciplines and fields of oral medicine and dentistry. The scope of Clinical and Experimental Dental Research comprises original research material on the anatomy, physiology and pathology of oro-facial, oro-pharyngeal and maxillofacial tissues, and functions and dysfunctions within the stomatognathic system, and the epidemiology, aetiology, prevention, diagnosis, prognosis and therapy of diseases and conditions that have an effect on the homeostasis of the mouth, jaws, and closely associated structures, as well as the healing and regeneration and the clinical aspects of replacement of hard and soft tissues with biomaterials, and the rehabilitation of stomatognathic functions. Studies that bring new knowledge on how to advance health on the individual or public health levels, including interactions between oral and general health and ill-health are welcome.