Liu Feng, Xu Tong-kai, Xu Ming-ming, Feng Hai-lan, Song Guang-ying
The First Outpatient Dental Clinic, Peking University School and Hospital of Stomatology, Beijing 100034, China.
Zhonghua Kou Qiang Yi Xue Za Zhi. 2009 Nov;44(11):645-8.
To evaluate the effect of shade guide training box and shade guide training software on shade matching ability of observers when used separately. To find out the difference between two training plans when the two training methods were used in combination, and to provide information on shade matching training system.
Sixty-two postgraduate dental students who specialized in prosthodontics with 1 to 5 year clinical experience were enrolled in this study. At base line, each participant were asked to match 7 standard shade tabs which have been randomly chosen from Vita 3D-Master shade guide and 7 intermediate shade tabs from Vita bleached guide 3D-Master. Then the subjects were allocated to 2 groups [Toothguide Training Box (TTB) group and Toothguide Training (TT) group] according to the baseline data. Participants in group TTB received training session once a week for 3 weeks, while those in group TT received TT training session once a week for 3 weeks. All participants took a middle term shade-matching test. Then the two groups exchange the training methods and repeat the whole process, a final test was given to each participant. The elapsed time and number of accurate shade matching were recorded for each training session. Wilcoxon signed ranks test and ANOVA were used in data analysis.
There were no significant differences in the number of accurate shade matching (standard shade tab and the sum) between group TTB (4.4 +/- 1.3 and 5.3 +/- 1.6) and TT (4.0 +/- 1.4 and 4.9 +/- 1.5) in the middle term test with higher value found in group TTB. In the final test, the number of accurate shade matching (standard shade tab and the sum) in group TT (4.9 +/- 0.8 and 6.4 +/- 0.8) was higher than that in group TTB (4.7 +/- 1.1 and 5.8 +/- 0.9), but significant difference was found only when the sum number of accurate shade matching was compared between the two groups (P < 0.05). There was no significant difference between data from middle term test and from final test in group TTB; while in group TT, the number of accurate shade matching in the final test was significantly increased compared with that in the middle term test (P < 0.05).
When used in combination, TT training followed by TTB training is recommended.
评估比色板训练盒和比色板训练软件单独使用时对观察者比色能力的影响。找出两种训练方法联合使用时两种训练方案之间的差异，并提供比色训练系统的相关信息。
本研究纳入了62名口腔修复专业的研究生，他们具有1至5年的临床经验。在基线时，要求每位参与者匹配从Vita 3D-Master比色板中随机选取的7个标准色片以及Vita bleached guide 3D-Master中的7个中间色片。然后根据基线数据将受试者分为2组[比色板训练盒（TTB）组和比色板训练（TT）组]。TTB组的参与者每周接受一次训练，共3周，而TT组的参与者每周接受一次TT训练，共3周。所有参与者都进行了中期比色测试。然后两组交换训练方法并重复整个过程，对每位参与者进行最终测试。记录每次训练的用时和准确比色的次数。数据分析采用Wilcoxon符号秩检验和方差分析。
在中期测试中，TTB组（4.4±1.3和5.3±1.6）和TT组（4.0±l.4和4.9±1.5）准确比色的次数（标准色片和总数）无显著差异，TTB组的值更高。在最终测试中，TT组（4.9±0.8和6.4±0.8）准确比色的次数（标准色片和总数）高于TTB组（4.7±1.1和5.8±0.9），但仅在比较两组准确比色总数时发现有显著差异（P<0.05）。TTB组中期测试和最终测试的数据无显著差异；而在TT组中，最终测试的准确比色次数与中期测试相比显著增加（P<0.05）。
建议联合使用时，先进行TT训练，再进行TTB训练。
