Effect of aging on color and whiteness of single shade and group shade resin composites in restorations with different cavity configurations

IF 6.3 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Dental Materials Pub Date : 2026-04-01 Epub Date: 2025-12-11 DOI:10.1016/j.dental.2025.12.005

Bibiana Gabardo Perez Mariano da Rocha , Oscar E. Pecho , Letícia Brandão Durand , Javier Ruiz-López , María M. Pérez

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引用次数: 0

Abstract

Objectives

To evaluate the effect of aging on the color and whiteness of single- and group- shade resin composites in restorations with different cavity configurations and dental shades.

Methods

Class I and V cavities (length of 8.0 mm, depth of 2.0 mm and width of 2.5 mm) were prepared in artificial acrylic mandibular right molars with different shades (A1, A2, A3, A3.5, and A4). Three single- (OMNI- Omnichroma, UNI- Vittra APS Unique, CHA- Charisma Diamond ONE) and two group-shade (FIL- Filtek Universal Restorative, HAR- Harmonize) resin composites were evaluated. The ISO 4892–2 was used to perform the accelerated artificial aging (AAA). Spectral reflectance measurements were obtained and CIELAB color coordinates were calculated (CIE D65 standard illuminant and 2º CIE1931 Standard Observer) at baseline and after AAA. CIEDE2000 color differences (ΔE₀₀),

% {∆ L}_{00}, % {∆ C}_{00}, % {∆ H}_{00}

and whiteness variations (ΔWI_D) were calculated. Generalized linear models (GLM) were used for the comparison between combined groups (shade, aging, and cavity configuration) for each outcome individually and all possible associations between groups (α = 0.001). The corresponding perceptibility (PT₀₀ = 0.8 and WPT = 0.7) and acceptability (AT₀₀ =1.8 and WAT = 2.6) thresholds were used for the analysis of the results.

Results

In general, the color stability of single- and group-shade composites after aging was better for Class V restorations, presenting lower ΔE₀₀ and ΔWI_D values. For Class I restorations, group shade composites (FIL and HAR) exhibited lower ΔE₀₀ and ΔWI_D values; FIL generally showed the lowest ΔE₀₀ and ΔWI_D values for both Class I and Class V restorations. These values were below the AT₀₀ and WAT values for Class V restorations, but above the AT₀₀ and WAT values for Class I restorations.

Clinical significance

The influence of cavity configuration on color and whiteness stability indicates that restoration geometry should be considered when predicting long-term shade matching and esthetic durability of single- and group-shade composites.”

查看原文本刊更多论文

老化对不同空腔结构修复体中单影和群影树脂复合材料色白度的影响

目的：评价老化对不同牙体形态和牙体色度的单阴树脂和群阴树脂复合材料的颜色和白度的影响。方法：在不同色度（A1、A2、A3、A3.5、A4）的人工丙烯酸下颌骨右磨牙上制备I类、V类牙槽，牙槽长8.0 mm，牙槽深2.0 mm，牙槽宽2.5 mm。评价了三种单树脂复合材料（OMNI- Omnichroma, UNI- Vittra APS Unique, CHA- Charisma Diamond ONE）和两种组色树脂复合材料（FIL- Filtek Universal Restorative, HAR- Harmonize）。采用ISO 4892-2进行加速人工老化（AAA）。获得光谱反射率测量值并计算基线和AAA后CIELAB颜色坐标（CIE D65标准光源和2ºCIE1931标准观察者）。计算CIEDE2000色差（ΔE00）、%∆L00、%∆C00、%∆h00和白度变化（ΔWID）。采用广义线性模型（GLM）对组合组（阴影、老化和空腔结构）之间的每个结果进行单独比较，并对组间所有可能的关联进行比较（α = 0.001）。采用相应的感知阈值（PT00 = 0.8, WPT = 0.7）和可接受阈值（AT00 =1.8, WAT = 2.6）对结果进行分析。结果：总的来说，单色系和群色系复合材料老化后的颜色稳定性对V类修复效果更好，ΔE00和ΔWID值更低。对于I类修复体，组影复合材料（FIL和HAR）的ΔE00和ΔWID值较低；总的来说，在I类和V类恢复中，FIL的ΔE00和ΔWID值最低。这些值低于V类恢复的AT00和WAT值，但高于I类恢复的AT00和WAT值。临床意义：腔体结构对颜色和白度稳定性的影响表明，在预测长期色度匹配和单色度和群色度复合材料的美观耐久性时，应考虑修复几何形状。

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

Dental Materials 工程技术-材料科学：生物材料

CiteScore

9.80

自引率

10.00%

发文量

290

审稿时长

67 days

期刊介绍： Dental Materials publishes original research, review articles, and short communications. Academy of Dental Materials members click here to register for free access to Dental Materials online. The principal aim of Dental Materials is to promote rapid communication of scientific information between academia, industry, and the dental practitioner. Original Manuscripts on clinical and laboratory research of basic and applied character which focus on the properties or performance of dental materials or the reaction of host tissues to materials are given priority publication. Other acceptable topics include application technology in clinical dentistry and dental laboratory technology. Comprehensive reviews and editorial commentaries on pertinent subjects will be considered.