Paul S, Peter A, Pietrobon N, Hämmerle C H F
Clinic of Fixed and Removable Prosthodontics and Dental Material Sciences, Center for Dental and Oral Medicine, University of Zürich, Plattenstrasse 11, 8028 Zurich, Switzerland.
J Dent Res. 2002 Aug;81(8):578-82. doi: 10.1177/154405910208100815.
Due to interhuman differences in the perception of color, visual shade assessment of human teeth is lacking standardization that may be improved by the use of a spectrophotometer. In this study, we tested the hypothesis that spectrophotometric assessment of tooth color is comparable with human visual determination. On 30 patients, three operators with unreported visual color deficiency independently selected the best match to the middle third of unrestored maxillary central incisors, using a Vita Classical Shade Guide. The same teeth were measured by means of a reflectance spectrophotometer. In the human group, all 3 visual shade selections matched in only 26.6%. In the spectrophotometric group, all 3 shade selections matched in 83.3%. In 93.3%, Delta E values of visually assessed tooth shades were higher than spectrophotometrically assessed Delta E values (p < 0.0001). The results suggest that spectrophotometric shade analysis is more accurate and more reproducible compared with human shade assessment.
由于人与人之间在颜色感知上存在差异，人牙的视觉比色缺乏标准化，而使用分光光度计可能会改善这一情况。在本研究中，我们检验了以下假设：牙齿颜色的分光光度评估与人类视觉判定具有可比性。对30名患者，三名未报告有视觉色觉缺陷的操作人员使用Vita经典比色板，独立选择与未修复上颌中切牙中三分之一最匹配的颜色。使用反射分光光度计对同一颗牙齿进行测量。在人工比色组中，所有3次视觉比色选择仅有26.6%相互匹配。在分光光度比色组中，所有3次比色选择有83.3%相互匹配。在93.3%的情况下，视觉评估的牙齿色差值高于分光光度评估的色差值（p < 0.0001）。结果表明，与人工比色评估相比，分光光度比色分析更准确且更具可重复性。
