Sugimura Runa, Takamizawa Toshiki, Aoki Ryota, Muto Rei, Hirokane Eizo, Kurokawa Hiroyasu, Kitahara Nobuya, Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Team Tokyo Members Clinic.
J Esthet Restor Dent. 2025 Feb;37(2):423-439. doi: 10.1111/jerd.13279. Epub 2024 Jul 14.
The color matching of single-shade resin composites after in-office whitening was investigated.
Four single-shade resin composites were used. A total of 35% hydrogen peroxide was used as the whitening agent. The resin composite was placed in a cavity of an artificially discolored bovine tooth. The color differences between the restoration and surrounding enamel before and after whitening were determined based on ΔE*, ΔE, and ΔWI. The color stability, surface roughness (Sa), and surface gloss (GU) of the resin composite alone were also evaluated. Statistical analyses were performed using repeated-measures analysis of variance with the Tukey-Kramer test.
Based on the 50:50% of perceptibility and acceptability thresholds of ΔE* and ΔE, none of the resin composite restorations were clinically acceptable before or after whitening. Regarding ΔWI, although all resin composites showed "acceptable match" in the baseline, they showed "mismatch" after the third session of whitening. Most of the resin composites alone were stable in color against whitening.
Although the single-shade resin composites failed to achieve the expected color matching on discolored teeth either before or after the whitening, the impact of the whitening on the color of the resin composite alone may be negligible.
研究诊室美白后单色调树脂复合材料的颜色匹配情况。
使用四种单色调树脂复合材料。以35%的过氧化氢作为美白剂。将树脂复合材料置于人工染色的牛牙窝洞中。根据ΔE*、ΔE和ΔWI确定美白前后修复体与周围牙釉质之间的颜色差异。还评估了单独树脂复合材料的颜色稳定性、表面粗糙度（Sa）和表面光泽度（GU）。采用重复测量方差分析和Tukey-Kramer检验进行统计分析。
基于ΔE*和ΔE的50:50%的可察觉性和可接受性阈值，所有树脂复合材料修复体在美白前后在临床上均不可接受。关于ΔWI，尽管所有树脂复合材料在基线时显示“可接受匹配”，但在第三次美白后显示“不匹配”。大多数单独的树脂复合材料在美白后颜色稳定。
尽管单色调树脂复合材料在美白前后均未能在变色牙上实现预期的颜色匹配，但美白对单独树脂复合材料颜色的影响可能微不足道。
