Ruschel V C, Martins M V, Bernardon J K, Maia H P
Oper Dent. 2018 Sep/Oct;43(5):460-466. doi: 10.2341/17-132-S. Epub 2018 Mar 16.
Rehydration of the tooth remnant and complete polymerization of the composite resin are aspects that should be considered in shade selection of composite resin. This article presents a case series of Class IV restorations performed to evaluate the color match between the composite resin and the tooth remnant. Thirteen Class IV restorations were performed in maxillary central incisors and evaluated according to the period following the restorative procedure: 10 minutes (baseline), 48 hours before and after finishing and polishing, and seven, 14, and 28 days. The color match of the restorations was evaluated by the ΔE values of the tooth remnant (TR) and the composite resin (CR) in each evaluation period using a spectrophotometer. The translucency, luminosity, and saturation were analyzed qualitatively in digital photographs of the restorations. The CR ΔE was statistically similar to the TR ΔE at 14 and 28 days ( p>0.05). The saturation and luminosity of most of the restorations remained unchanged, but there was a greater change in the translucency. The color match of the composite resin in Class IV restorations was observed after 14 days of clinical assessment in this case series.
牙体残片的再水化和复合树脂的完全聚合是复合树脂比色时应考虑的因素。本文介绍了一组IV类洞修复病例，以评估复合树脂与牙体残片之间的颜色匹配情况。在上颌中切牙上进行了13例IV类洞修复，并根据修复术后的时间进行评估：10分钟（基线）、完成修整和抛光前后48小时，以及7天、14天和28天。使用分光光度计通过每个评估期内牙体残片（TR）和复合树脂（CR）的ΔE值评估修复体的颜色匹配情况。在修复体的数码照片中对透明度、亮度和饱和度进行定性分析。在14天和28天时，CR的ΔE与TR的ΔE在统计学上相似（p>0.05）。大多数修复体的饱和度和亮度保持不变，但透明度变化较大。在该病例系列中，临床评估14天后观察到IV类洞修复中复合树脂的颜色匹配情况。
