Bahannan Salma A
Oral and Maxillofacial Rehabilitation Department, Faculty of Dentistry, King Abdulaziz University, Saudi Arabia.
J Dent. 2014 Jan;42(1):48-52. doi: 10.1016/j.jdent.2013.11.001. Epub 2013 Nov 16.
Study aims were to compare shade matching quality between visual and machine-aided shade selection among dental students and to evaluate the effect of experience and gender.
A total of 204 undergraduates and interns participated. They were briefed about colour matching using a visual method with a Vita-3D Master system and a spectrophotometer. Participants with colour vision deficiency were excluded. Six maxillary anterior teeth of a maxillary blue stone cast were replaced with six maxillary artificial teeth. Participants selected the best shade match using each method. A daylight illuminator with the GTI mini-matcher colour viewing system was used during the test. The results were statistically analysed with SPSS version 19 with 95% confidence intervals. Frequencies and Chi-square tests were used to analyse the data, at α=0.05 and with P<0.05 indicating significance.
Among the participants, 36.3% visually selected the correct shade, and 80.4% did so using the Easy Shade Compact machine. Experience (P=0.177) and gender (P=0.560) did not affect visual shade selection; in addition, with the Easy Shade Compact device, males and females equally mastered its use (P=1.0), and experience did not influence outcomes (P=0.552).
The shade matching device was significantly better than the conventional visual method. With both techniques, neither experience nor gender influenced shade matching quality.
Visual tooth colour matching is unreliable and inconsistent because of various subjective and objective factors, and the use of a colour measuring device might improve the quality of shade matching among dental students.
本研究旨在比较牙科专业学生在视觉选色和机器辅助选色之间的比色质量，并评估经验和性别的影响。
共有204名本科生和实习生参与。向他们介绍了使用Vita-3D Master系统和分光光度计的视觉比色方法。排除有色觉缺陷的参与者。用上颌人造牙替换上颌蓝色石膏模型的六颗上颌前牙。参与者使用每种方法选择最佳比色。测试期间使用配有GTI迷你比色仪色彩观察系统的日光照明器。结果使用SPSS 19版本进行统计分析，置信区间为95%。采用频率和卡方检验分析数据，α = 0.05，P < 0.05表示有统计学意义。
在参与者中，36.3%通过视觉选择了正确的颜色，而使用Easy Shade Compact机器选色的比例为80.4%。经验（P = 0.177）和性别（P = 0.560）不影响视觉选色；此外，对于Easy Shade Compact设备，男性和女性同样能熟练使用（P = 1.0），且经验不影响结果（P = 0.552）。
比色设备明显优于传统的视觉方法。对于这两种技术，经验和性别均不影响比色质量。
由于各种主观和客观因素，视觉牙齿比色不可靠且不一致，使用颜色测量设备可能会提高牙科专业学生的比色质量。
