Sampaio Camila S, Gurrea Jon, Gurrea Marta, Bruguera August, Atria Pablo J, Janal Malvin, Bonfante Estevam A, Coelho Paulo G, Hirata Ronaldo
Int J Periodontics Restorative Dent. 2018;38(Suppl):s113–s118. doi: 10.11607/prd.3270. Epub 2018 Apr 20.
This study evaluated the color variability of hues B, C, and D between the VITA Classical shade guide (Vita Zahnfabrik) and four other VITA-coded ceramic shade guides using a digital camera (Canon EOS 60D) and computer software (Adobe Photoshop CC). A cross-polarizing filter was used to standardize external light sources influencing color match. A total of 275 pictures were taken, 5 per shade tab, for 11 shades (B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, and D4), from the following shade guides: VITA Classical (control); IPS e.max Ceram (Ivoclar Vivadent); IPS d.SIGN (Ivoclar Vivadent); Initial ZI (GC); and Creation CC (Creation Willi Geller). Pictures were evaluated using Adobe Photoshop CC for standardization of hue, chroma, and value between shade tabs. The VITA-coded shade guides evaluated here showed an overall unmatched shade in all their tabs when compared to the control, suggesting that shade selection should be made with the corresponding manufacturer guide of the ceramic intended for the final restoration.
本研究使用数码相机（佳能EOS 60D）和计算机软件（Adobe Photoshop CC），评估了VITA经典比色板（维他公司）与其他四种VITA编码陶瓷比色板之间B、C和D色调的颜色差异。使用交叉偏振滤光片来规范影响颜色匹配的外部光源。从以下比色板中，针对11种颜色（B1、B2、B3、B4、C1、C2、C3、C4、D2、D3和D4），每个色片拍摄5张照片，共拍摄了275张照片：VITA经典（对照）；IPS e.max Ceram（义获嘉伟瓦登特）；IPS d.SIGN（义获嘉伟瓦登特）；Initial ZI（GC）；以及Creation CC（Willi Geller创作公司）。使用Adobe Photoshop CC评估照片，以规范色片之间的色调、彩度和明度。与对照相比，此处评估的VITA编码比色板在所有色片上均显示出整体不匹配的颜色，这表明应使用最终修复所用陶瓷的相应制造商比色板进行颜色选择。
