OBJECTIVES: To review current knowledge with respect to tooth colour and its measurement. METHODS: 'Medline' database for the period 1966 to the present day and 'ISI Web of Science' database for the period 1974 to the present day were searched electronically with key words tooth, teeth, colour and color. CONCLUSIONS: The colour and appearance of teeth is a complex phenomenon, with many factors such as lighting conditions, translucency, opacity, light scattering, gloss and the human eye and brain influencing the overall perception of tooth colour. The measurement of tooth colour is possible via a number of methods including visual assessment with shade guides, spectrophotometry, colourimetry and computer analysis of digital images. These methods have successfully been used to measure longitudinal tooth colour changes when the dentition has undergone tooth whitening procedures.
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机译：目的：回顾有关牙齿颜色及其测量的当前知识。方法：用关键词“牙齿”，“牙齿”，“颜色”和“颜色”以电子方式搜索1966年至今的“ Medline”数据库和1974年至今的“ ISI Web of Science”数据库。结论：牙齿的颜色和外观是一个复杂的现象，其中包括照明条件，半透明性，不透明度，光散射，光泽度以及人眼和大脑等许多因素会影响牙齿颜色的整体感知。牙齿颜色的测量可通过多种方法进行，包括使用遮光罩进行视觉评估，分光光度法，比色法和数字图像的计算机分析。当牙列经过牙齿增白程序后，这些方法已成功用于测量牙齿的纵向颜色变化。
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