Effect of Coffee Thermocycling on Color Stability and Translucency of CAD-CAM Polychromatic High Translucent Zirconia Compared With Lithium Disilicate Glass Ceramic

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical and Experimental Dental Research Pub Date : 2024-07-05 DOI:10.1002/cre2.918

Ratchaphat Khomprang, Jeerapa Sripetchdanond, Wareeratn Chengprapakorn

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引用次数: 0

Abstract

Aims and Objectives

To evaluate the effect of coffee thermocycling on color stability and translucency of CAD-CAM polychromatic high translucent zirconia compared with lithium disilicate glass ceramic.

Methods

Sixteen rectangular plates (14 × 16 × 1.0 mm) of two ceramic materials (IPS E.max CAD (IEC), IPS E.max ZirCAD Prime [IZP]) were prepared. Each specimen was measured for color coordinates using a spectrophotometer following 30,000 cycles of coffee thermocycling. CIELAB formula was used to determine color and translucency differences (ΔE and ΔTP). The means of ΔE and ΔTP were compared using independent samples t-test and were evaluated using their respective 50%:50% perceptibility and acceptability thresholds (PT and AT). One-way analysis of variance was performed to evaluate the translucency parameter (TP) and surface roughness (Ra) of each material.

Results

Mean ΔE values of IEC (4.69) and IZP (4.64) were higher than the AT (ΔE ≤ 2.7) with no significant difference found between the two groups (p = 0.202). Considering the TP, only IEC showed a statistically significant increase in TP value (p < 0.001). However, the mean ΔTP of IEC (3.25) remained within the range of acceptability (1.3 < ΔTP ≤ 4.4).

Conclusions

Within the limitations of this current study, the color stability of all materials was clinically affected by coffee thermocycling. In terms of translucency, only lithium disilicate glass ceramic was influenced by coffee thermocycling. High translucent zirconia had superior translucency stability compared to lithium disilicate glass ceramic.

Abstract Image

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与二硅酸锂玻璃陶瓷相比，咖啡热循环对 CAD-CAM 多色高透光氧化锆颜色稳定性和透光性的影响

目的和目标：与二硅酸锂玻璃陶瓷相比，评估咖啡热循环对 CAD-CAM 多色高透光氧化锆颜色稳定性和透光性的影响：制备了两种陶瓷材料（IPS E.max CAD (IEC)、IPS E.max ZirCAD Prime [IZP]）的 16 块矩形板（14 × 16 × 1.0 毫米）。使用分光光度计对每个试样进行 30,000 次咖啡热循环后的色坐标测量。使用 CIELAB 公式确定颜色和半透明度差异（ΔE 和 ΔTP）。ΔE和ΔTP的平均值通过独立样本t检验进行比较，并使用各自的50%:50%可感知性和可接受性阈值（PT和AT）进行评估。对每种材料的半透明参数（TP）和表面粗糙度（Ra）进行了单因素方差分析：IEC（4.69）和 IZP（4.64）的平均 ΔE 值高于 AT（ΔE ≤ 2.7），两组之间无显著差异（p = 0.202）。在 TP 值方面，只有 IEC 的 TP 值出现了统计学意义上的显著增加（p 结论：IEC 的 TP 值高于 AT（ΔE ≤ 2.7），两组之间没有发现显著差异（p = 0.202）：在本次研究的局限性范围内，所有材料的颜色稳定性在临床上都受到了咖啡热循环的影响。就透光度而言，只有二硅酸锂玻璃陶瓷受到咖啡热循环的影响。与二硅酸锂玻璃陶瓷相比，高半透明氧化锆的半透明稳定性更好。

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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.