A study on the discoloration of different dental porcelain systems.

IF 0.9 Q3 DENTISTRY, ORAL SURGERY & MEDICINE European Oral Research Pub Date : 2023-09-06 DOI:10.26650/eor.20231033050

Mehmet Cagatay Ulucan, Melek Kilic Avsar, Giray Bolayir

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Abstract

Purpose: This study aimed to investigate the discoloration of four types of dental porcelain systems (feldspathic, monolithic zirconia, lithium disilicate, and leucite glassceramic) with various surface treatments (glazed and mechanically polished) after undergoing chewing simulation against a natural tooth antagonist.

Materials and methods: Disc-shaped porcelain groups (9x3mm) were produced for the following categories: feldspathic glazed (FG), feldspathic mechanically polished (FM), zirconia glazed (ZG), zirconia mechanically polished (ZM), lithium disilicate glazed (ExG), lithium disilicate mechanically polished (ExM), leucite glass-ceramic glazed (EG), and leucite glass-ceramic (EM). In vitro chewing simulation was conducted on all porcelain groups, and a spectrophotometer was used to compare the color changes between their initial states.

Results: The ΔE values (discoloration) of all porcelain samples were statistically different (p <0.05), and the ΔE values of the glazed samples were higher than those of the mechanically polished samples.

Conclusion: All the glazed samples are more likely to show more color change than the mechanically polished sample groups.

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不同烤瓷体系变色的研究

目的：本研究旨在研究四种类型的牙科陶瓷系统（长石、单片氧化锆、二硅酸锂和亮氨酸微晶玻璃）在对天然牙齿拮抗剂进行咀嚼模拟后，经过各种表面处理（上釉和机械抛光）后的变色情况。材料和方法：制备了以下类别的圆盘状陶瓷组（9x3mm）：长石釉（FG）、长石机械抛光（FM）、氧化锆釉（ZG）、氧化锌机械抛光（ZM）、二硅酸锂釉（ExG）、二硅酸盐机械抛光（ExM）、白榴石微晶玻璃釉（EG）和白榴石玻璃陶瓷（EM）。对所有瓷组进行体外咀嚼模拟，并使用分光光度计比较其初始状态之间的颜色变化。结果：所有瓷器样品的ΔE值（变色）具有统计学差异（p结论：所有上釉样品比机械抛光样品组更有可能显示出更多的颜色变化。

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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