不透明树脂复合材料与高半透明氧化锆复合材料在变色基材上的遮盖能力。

IF 4.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE
Shuping Chen, Lei Jiang, Run Chen
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引用次数: 0

摘要

目的:研究不透明树脂复合材料与高半透明氧化锆复合材料对严重变色基材的遮盖能力。方法:采用不透明树脂复合材料包覆4种变色基底(ND8、ND9、钴铬合金、黑色),覆盖厚度为0、0.10、0.15、0.20、0.25、0.30 mm的6种厚度,以a2色基底为对照。高透明度的氧化锆圆盘(0.5,0.8和1.0毫米;N = 10)随后在每个标本上分层。色差(ΔE00)用光谱辐射计测定,并根据CIEDE2000公式计算。采用Tukey检验的双因素方差分析(α = 0.05)评估颜色差异。结果:氧化锆和树脂厚度均显著影响ΔE00值(p < 00): ND8 (0.25 mm树脂+0.8 mm氧化锆),ND9 (0.3 + 1.0 mm)和Co-Cr (0.25 mm + 1.0 mm)。没有一种被测试的组合能成功掩盖黑色衬底。结论:不透明树脂复合材料的厚度对其掩蔽性能有显著影响。不透明树脂复合材料和高半透明氧化锆的结合应用可以有效地掩盖严重变色的基材,其结果取决于基材的类型。临床意义:本研究提供了一种可量化的策略,可以用最小的修复厚度掩盖严重变色的基底。特别是在牙齿准备有限的美学区域,在高半透明氧化锆下应用最佳厚的不透明树脂复合材料,可以在保留尽可能多的自然牙齿结构的同时实现实用和微创的美学修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Masking Ability of the Combined Application of Opaque Resin Composite and High-Translucency Zirconia on Discolored Substrates.

Objective: This study evaluated the masking ability of combined opaque resin composite and high-translucency zirconia on severely discolored substrates.

Methods: Four types of discolored substrates (ND8, ND9, cobalt-chromium alloy, and black) were coated with opaque resin composite at six thicknesses (0, 0.10, 0.15, 0.20, 0.25, and 0.30 mm), with an A2-shade substrate serving as the reference. High-translucency zirconia discs (0.5, 0.8, and 1.0 mm; n = 10) were subsequently layered over each specimen. Color differences (ΔE00) were determined with a spectroradiometer and calculated according to the CIEDE2000 formula. A two-way ANOVA with Tukey's test (α = 0.05) assessed color differences.

Results: Both zirconia and resin thickness significantly affected ΔE00 values (p < 0.001). The minimum thickness combinations achieving ΔE00 below the acceptability threshold were: ND8 (0.25 mm resin +0.8 mm zirconia), ND9 (0.3 + 1.0 mm), and Co-Cr (0.25 mm + 1.0 mm). None of the tested combinations successfully masked the black substrate.

Conclusion: The thickness of the opaque resin composite has a significant impact on its masking performance. The combined application of opaque resin composite and high-translucency zirconia can effectively mask severely discolored substrates, with the outcome depending on the type of substrate.

Clinical significance: This study provides a quantifiable strategy for masking severely discolored substrates using minimal restorative thickness. Especially in esthetic zones where tooth preparation is limited, applying an optimally thick opaque resin composite beneath high-translucency zirconia enables a practical and minimally invasive esthetic restoration while preserving as much natural tooth structure as possible.

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来源期刊
Journal of Esthetic and Restorative Dentistry
Journal of Esthetic and Restorative Dentistry 医学-牙科与口腔外科
CiteScore
6.30
自引率
6.20%
发文量
124
审稿时长
>12 weeks
期刊介绍: The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features. The range of topics covered in the journal includes: - Interdisciplinary esthetic concepts - Implants - Conservative adhesive restorations - Tooth Whitening - Prosthodontic materials and techniques - Dental materials - Orthodontic, periodontal and endodontic esthetics - Esthetics related research - Innovations in esthetics
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