Assessment of color stability and translucency of various CAD/CAM ceramics of different compositions and Thicknesses: An in vitro study

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Saudi Dental Journal Pub Date : 2024-05-03 DOI:10.1016/j.sdentj.2024.05.001

Passent Ellakany , Nourhan M. Aly , Shahad T. Alameer , Turki Alshehri , Shaimaa M. Fouda

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引用次数: 0

Abstract

Background

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.

Materials and Methods

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.

Results

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.

Conclusions

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.

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评估不同成分和厚度的 CAD/CAM 陶瓷的颜色稳定性和半透明度：体外研究

背景半透明性和光学特性对陶瓷修复体的美观有很大影响。材料和方法四种 CAD/CAM 陶瓷：二硅酸锂 (LD)、白云石强化 (LR)、高级二硅酸锂 (ALD) 和氧化锆强化硅酸锂 (ZLS)，暴露在不同的染色溶液（茶、可乐、咖啡和蒸馏水）中。每种陶瓷类型有 120 个试样，根据厚度（0.5 毫米、1 毫米和 1.5 毫米）分为若干小组。在热循环后测量颜色变化（ΔE00）和半透明参数（TP00），并采用分光光度法评估暴露在染色溶液中 1、7 和 30 天后的ΔE00 和 TP00。厚度对颜色稳定性的影响很大，0.5 毫米的厚度变化最小。暴露时间的长短也会影响颜色的变化，30 天的变化最为明显。LD 的半透明度最高。结论材料结构、厚度、染色溶液和暴露时间对 CAD/CAM 陶瓷的颜色稳定性和半透明度有显著影响，其中 LD 和 ALD 表现出更高的颜色稳定性，LD 表现出最高的半透明度。

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

Saudi Dental Journal DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

22 weeks

期刊介绍： Saudi Dental Journal is an English language, peer-reviewed scholarly publication in the area of dentistry. Saudi Dental Journal publishes original research and reviews on, but not limited to: • dental disease • clinical trials • dental equipment • new and experimental techniques • epidemiology and oral health • restorative dentistry • periodontology • endodontology • prosthodontics • paediatric dentistry • orthodontics and dental education Saudi Dental Journal is the official publication of the Saudi Dental Society and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.