Influence of underlying resin composite shade and material thickness on color matching of single-shade resin composites.

IF 1.1 4区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

American journal of dentistry Pub Date : 2026-02-01

Iris D O Costa, Jade L G Zago, Cecilia P Turssi, Fabiana M G França, Giselle M Marchi, Roberta T Basting, Waldemir F Vieira-Junior

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引用次数: 0

Abstract

Purpose: To assess the influence of the resin-based substrate shade and the single-shade resin composite thickness on color matching ability.

Methods: Discs (Ø6 x 2 mm) made from a conventional resin composite (Z350 XT) simulated high- (B1B), medium- (A3B), and low-luminosity (C3B) substrates. Each disc (n=10) received sequential increments of the following single-shade resin composites: Palfique Omnichroma (PO) or Vittra APS Unique (VU), at thicknesses of 0.5, 1 and 2 mm. Color parameters [CIEL*a*b*, Vita Scale (SGU), ΔEab, and ΔE₀₀] were determined for conventional resin composite and post-application measurement of single-shade resin composite thicknesses. Statistical analyses included the Mann-Whitney, Kruskal-Wallis, Dunn, Friedman, or Nemenyi tests (α= 0.05).

Results: The ΔEab and ΔE₀₀ values were significantly lower for PO than for VU (P< 0.05). At 1 mm, a decrease in L* values were observed for both resin composites and substrates (P< 0.05). The lowest ΔSGU values were recorded on the high-luminosity substrate (B1B), regardless of the applied thickness (P< 0.05).

Clinical significance: Single-shade resin composites did not completely match the resin substrate. Palfique Omnichroma outperformed Vittra APS Unique in all aspects, particularly in showing less overall color change, and especially when applied over high-luminosity resin substrates.

本刊更多论文

树脂复合底色和材料厚度对单色树脂复合材料配色的影响。

目的：评价树脂基基材色度和单色树脂复合厚度对配色能力的影响。方法：圆盘（Ø6 x 2mm）由传统树脂复合材料（Z350 XT）模拟高（B1B），中（A3B）和低亮度（C3B）基片制成。每个圆盘（n=10）连续增加以下单色树脂复合材料：Palfique Omnichroma （PO）或Vittra APS Unique (VU)，厚度为0.5,1和2 mm。测定常规树脂复合材料的颜色参数[CIEL*a*b*， Vita Scale (SGU)， ΔEab， ΔE₀0]和单色树脂复合材料厚度的涂后测量。统计分析采用Mann-Whitney、Kruskal-Wallis、Dunn、Friedman或Nemenyi检验（α= 0.05）。结果：PO的ΔEab和ΔE 0 0值显著低于VU （P< 0.05）。在1 mm处，树脂复合材料和基质的L*值均下降（P< 0.05）。无论施加厚度如何，高亮度衬底（B1B）的ΔSGU值最低（P< 0.05）。临床意义：单色树脂复合材料与树脂基质不完全匹配。Palfique Omnichroma在所有方面都优于Vittra APS Unique，特别是在显示较少的整体颜色变化方面，特别是在高亮度树脂基材上应用时。

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

American journal of dentistry 医学-牙科与口腔外科

CiteScore

2.40

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The American Journal of Dentistry, published by Mosher & Linder, Inc., provides peer-reviewed scientific articles with clinical significance for the general dental practitioner.