两种牙齿比色训练系统的应用对比分析

目的 评价牙齿比色训练箱与训练软件对受训者辨色能力的影响,为口腔色彩识别训练的设计提供参考依据.方法 选择具备1～5年修复临床经验的口腔修复学专业研究生62名作为受训者,采用Vita 3D-Master比色板作为比色工具,以随机数字表随机抽取的7个比色板标准色标和7个比色板非标准色标为目标色标进行比色测试,测量训练前受训者可准确识别的色标个数.按照测试成绩将受训者平均分为TTB组和,TT组(每组31名),分别用牙齿比色训练箱和训练软件进行每周1次、连续3周的牙齿比色训练;按上述方法进行训练中期比色测试.之后两组互换训练方式,再进行每周1次、连续3周的训练后,进行训练后比色测试.采用Wileoxin符号秩和检验分析训练中期与训练后两组受训者可准确识别的色标个数差异.结果 训练中期TTB组受训者可准确识别的标准色标和全部色标个数(4.4 ±1.3、5.3±1.6)均高于TT组(4.0±1.4、4.9±1.5),但差异均无统计学意义(P=O.457、0.310).训练后TT组受训者可准确识别的标准色标个数(4.9±0.8)高于TTB组(4.7±1.1),但差异无统计学意义(P=0.222,0.118);TT组可准确识别的全部色标个数(6.4±0.8)大于TTB组(5.8±0.9),差异有统计学意义(P＜0.05).结论 两种系统联合应用时,先进行牙齿比色训练软件训练,后进行牙齿比色训练箱训练的效果较好.

Application and comparison of two shade guide training systems

Objectives 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. Methods Sixty-two postgraduate dental students who specialized in prosthodontics with 1 to 5 year clinical experience were enrolled in this study.At base Iine.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 shadematching 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.Results 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)Conclusions When used in combination,TT training followed by TTB training is recommended.