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采用日本明海大学的牙冠色标卡，对４０名中国成人的健康上颌前牙（２３５个）牙冠进行了色彩学研究。结果发现：中切牙、侧切牙、尖牙的色相均值依次为：３．６８、３．６２、３．２９；明度均值依次为：３．９８、３．９１、３．６４；彩度均值为：３．６５、３．７２、３．７５。ＦＫｔＦＦ检验表明，中切牙、侧切牙的色相值、明度值显著高于尖牙，上颌前牙之间彩度值无显著差异，左右侧同名牙之间在色相、明度和彩度方面均无显著差异
The crown of 40 Chinese adults were treated with the color-coded dental crown card from the University of Minnesota, Japan. Coloring studies were performed on the healthy maxillary anterior teeth (235) crowns. The results showed that the average hue values of central incisor, lateral incisor and canine were 3.68, 3.62 and 3.29, respectively; mean values of brightness were 3.98, 3.91 and 3.64 respectively; As: 3.65, 3.72, 3.75. FKtFF test showed that the hue values and the lightness values of the incisors and lateral incisors were significantly higher than that of the canines. There was no significant difference in the chroma values between the maxillary anterior teeth. There was no difference in hue, lightness and saturation between the right and left teeth Significant differences