Department of Prosthodontics, Dental Sciences Center, Gulhane Military Medical Academy, Ankara, Turkey.
J Prosthet Dent. 2010 Mar;103(3):139-47. doi: 10.1016/S0022-3913(10)60020-0.
The lighting conditions of the environment and visual deficiencies such as red-green color vision deficiency affect the clinical shade matching performance of dental professionals.
The purpose of this study was to evaluate the shade matching performance of normal and color vision-deficient dental professionals with standard daylight and tungsten illuminants.
Two sets of porcelain disc replicas of 16 shade guide tabs (VITA Lumin) were manufactured to exact Lab* values by using a colorimeter. Then these twin porcelain discs (13 mm x 2.4 mm) were mixed up and placed into a color-matching cabinet that standardized the lighting conditions for the observation tests. Normal and red-green color vision-deficient dental professionals were asked to match the 32 porcelain discs using standard artificial daylight D65 (high color temperature) and tungsten filament lamp light (T) (low color temperature) illuminants. The results were analyzed by repeated-measures ANOVA and paired and independent samples t tests for the differences between dental professionals and differences between the illuminants (alpha=.05).
Regarding the sum of the correct shade match scores of all observations with both illuminants, the difference between normal vision and red-green color vision-deficient dental professional groups was not statistically significant (F=4.132; P=.054). However, the correct shade match scores of each group were significantly different for each illuminant (P<.005). The correct shade matching scores of normal color vision dental professionals were significantly higher with D65 illuminant (t=7.004; P<.001). Color matching scores of red-green color vision-deficient dental professionals (approximately 5.7 more pairs than with D65) were significantly higher with T illuminant (t=5.977; P<.001). CONCLUSIONS.: Within the limitations of this study, the shade matching performance of dental professionals was affected by color vision deficiency and the color temperature of the illuminant. The color vision-deficient group was notably unsuccessful with the D65 illuminant in shade matching. In contrast, there was a significant increase in the shade matching performance of the color vision-deficient group with T illuminant. The lower color temperature illuminant dramatically decreased the normal color vision groups' correct shade matching score.
环境的照明条件和视觉缺陷，如红绿色盲，会影响牙科专业人员的临床比色匹配表现。
本研究的目的是评估正常和色觉缺陷的牙科专业人员在标准日光和钨丝灯照明下的比色匹配表现。
使用分光光度计制造了两组 16 个比色指南标签（VITA Lumin）的瓷盘复制品，以精确的 Lab*值。然后将这两个双胞胎瓷盘（13 毫米 x 2.4 毫米）混合，并放置在一个颜色匹配柜中，该柜子标准化了观察测试的照明条件。要求正常和红绿色盲的牙科专业人员使用标准人工日光 D65（高色温）和钨丝灯泡光（T）（低色温）照明来匹配 32 个瓷盘。使用重复测量方差分析和配对和独立样本 t 检验分析结果，以比较牙科专业人员之间和照明之间的差异（α=.05）。
关于两种照明条件下所有观察的正确比色匹配得分总和，正常视力和红绿色盲牙科专业人员组之间的差异没有统计学意义（F=4.132；P=.054）。然而，每组的正确比色匹配得分对于每种照明都有显著差异（P<.005）。正常色觉牙科专业人员在 D65 照明下的正确比色匹配得分显著更高（t=7.004；P<.001）。红绿色盲牙科专业人员的比色匹配得分（与 D65 相比约高 5.7 对）在 T 照明下显著更高（t=5.977；P<.001）。
在本研究的限制范围内，牙科专业人员的比色匹配表现受到色觉缺陷和照明色温的影响。色觉缺陷组在 D65 照明下的比色匹配明显不成功。相比之下，色觉缺陷组在 T 照明下的比色匹配表现显著提高。色温较低的照明显著降低了正常色觉组的正确比色匹配得分。
