全牙测色比色仪测色准确性的体外研究

In vivo model to evaluate the accuracy of complete-tooth spectrophotometer for dental clinics

目的 通过比较比色板比色和全牙测色比色仪测色的准确入次,并分析比色仪测色结果与内置色度值的色差,评价全牙测色比色仪测色的准确性.方法 20名口腔修复专业医师用Vita 3D-Master比色板以及训练前后用Crystaleye全牙测色比色仪对固定在标准牙列模型上的8个比色片中央区分别进行比色板比色和比色仪测色,记录比色结果,计算比色板比色准确率和训练前后比色仪测色准确率.结果 20名受试对象比色板比色的准确率为49%,训练前后比色仪测色的准确率分别为83%、99%.结论 全牙测色比色仪的测色准确性明显高于比色板比色,掌握正确的测色方法后可以进一步提高测色准确性.

Objective To test AE between measured value and right value from the Crystaleye complete-tooth spectrophotometer, and to evaluate the accuracy rate of the spectrophotometer. Methods Twenty prosthodontists participated in the study. Each of them used Vita 3D-Master shadeguide to do the shade matching, and used Crystaleye complete-tooth spectrophotometer （before and after the test training）tested the middle of eight fixed tabs from shadeguide in the dark box. The results of shade matching and spectrophotometer were recorded. The accuracy rate of shade matching and the spectrophotometer before and after training were calculated. Results The average accuracy rate of shade matching was 49%. The average accuracy rate of the spectrophotometer before and after training was 83% and 99%. Conclusions The accuracy of the spectrophotometer was significant higher than that in shade matching, and training can improve the accuracy rate.