Ferreira Luiza de Almeida Queiroz, Peixoto Rogéli Tibúrcio Ribeiro da Cunha, de Magalhães Cláudia Silami, Sá Tassiana Melo, Yamauti Monica, Jardilino Francisca Daniele Moreira
Post-Graduate Program, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Department of Restorative Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Restor Dent Endod. 2022 Feb 3;47(1):e8. doi: 10.5395/rde.2022.47.e8. eCollection 2022 Feb.
The aim of this study was to compare the color change of the Giomer resin composite (Beautifil-Bulk) by using photographs obtained with a smartphone (iPhone 6S) associated with Adobe Photoshop software (digital method), with the spectrophotometric method (Vita Easyshade) after immersion in different pigment solutions.
Twenty resin composite samples with a diameter of 15.0 mm and thickness of 1.0 mm were confectioned in A2 color ( = 5). Photographs and initial color readings were performed with a smartphone and spectrophotometer, respectively. Then, samples were randomly divided and subjected to cycles of immersion in distilled water (control), açai, Coke, and tomato sauce, 3 times a day, 20 minutes for 7 days. Later, new photographs and color readings were taken.
The analysis (2-way analysis of variance, Holm-Sidak, < 0.05) demonstrated no statistical difference ( < 0.005) between the methods in all groups. Similar color changes were observed for all pigment solutions when using the spectrophotometric method. For the digital method, all color changes were clinically unacceptable, with distilled water and tomato sauce similar to each other and with statistical differences ( < 0.005) for Coke and açai.
Only the tomato sauce produced a color change above the acceptability threshold using both methods of color assessment. The spectrophotometric and digital methods produce different patterns of color change. According to our results, the spectrophotometric method is more recommended in color change assessment.
本研究旨在比较在不同色素溶液中浸泡后，使用与Adobe Photoshop软件相关联的智能手机（iPhone 6S）拍摄照片（数字方法）和使用分光光度法（Vita Easyshade）对聚酸改性复合树脂（Beautifil-Bulk）颜色变化的影响。
制作20个直径为15.0毫米、厚度为1.0毫米的树脂复合材料样本，颜色为A2（=5）。分别使用智能手机和分光光度计进行照片拍摄和初始颜色读数。然后，将样本随机分组，每天3次，每次20分钟，浸泡在蒸馏水（对照）、阿萨伊果、可乐和番茄酱中，持续7天。之后，进行新的照片拍摄和颜色读数。
分析（双向方差分析，Holm-Sidak法，<0.05）表明，所有组中两种方法之间无统计学差异（<0.005）。使用分光光度法时，所有色素溶液的颜色变化相似。对于数字方法，所有颜色变化在临床上均不可接受，蒸馏水和番茄酱彼此相似，可乐和阿萨伊果之间存在统计学差异（<0.005）。
仅番茄酱在两种颜色评估方法中均产生了超过可接受阈值的颜色变化。分光光度法和数字方法产生不同的颜色变化模式。根据我们的结果，在颜色变化评估中更推荐分光光度法。
