比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

比色板标准与非标准色标识别差异的初探

Objective To compare the shade matching accuracy between tabs of shade guide and tabs out of shade guide by prosthodontists.Methods Sixty-two graduate students who had 1 to 5 years clinical experience without color blindness were included in this study.Twenty-nine tabs from Vita 3D-Master shadeguide and 7 tabs out of Vita 3D-Master shade guide but from Vita Bleachedguide 3D-Master were taken as the targets of shade matching and observed under the standard light.Subjects' shade matching accuracy on tabs of shadeguide and tabs out of shadeguide was recorded.Frequency of right match was analyzed using Monte Carlo exact probability-test Wilcoxin test was used to analyze the difference between each group on ranked data of value,chroma and hue.Results The shade matching accuracy of tabs of shade guide[45.9%(199/434)]was significantly higher than that of tabs out of shade guide[9.0%(39/434)].There was significant difference between the two kinds of tabs of ranked data of value[0.2 (0.1～0.3),0.4(0.4～0.5)]and chroma[0.2(0.1～0.4),0.5(0.4～0.6),P＜0.01 ],but there was no significant difference in hue data[0.3(0.1～0.4),0.3(0.1～0.4)].Conclusions The shade matching ability of prosthodontists on tabs out of shade guide is lower than that on tabs of shadeguide.To fulfill clinical need,more training is necessary.     

OlympusCrystaleye比色仪比色结果可重复性及准确性研究

目的评价Olympus Crystaleye分光光度计比色仪测色结果的可重复性及准确性。方法使用Crystal-eye分光光度计对固定在模拟暗盒的VITAPAN classical比色板A1色片、VITAPAN 3D 1M1色片、1颗离体左中切牙以及常规测试条件下1名志愿者的左中切牙的切端、体部、颈部3个部位进行重复测色20次,分别记录其L＊、a＊b、＊值,并计算L＊、a＊、b＊平均值。次日用相同方法再重复测量20次,同一测试对象再次测量结果与前次计算的L＊、a＊、b＊平均值进行比较,计算各组平均色差值△E,评价比色仪的可重复性。用两种比色片3个部位、40次重复测量得到的120个测色结果与实际比色片色调间的符合率来评价比色仪的准确性。结果模拟暗盒的VITAPAN classical比色板A1色片、VITAPAN 3D 1M1色片、1颗离体左中切牙以及常规测试条件下1名志愿者的左中切牙的切端、体部、颈部3个部位平均色差值△E范围为0.45～0.82,均小于可辨色差1.70。VITAPANclassical比色板A1色片、VITAPAN 3D 1M1色片颜色匹配的准确率分别为95.85%、97.50%,差异无统计学意义（χ2=0.517,P〉0.05）。结论 Crystaleye分光光度计比色仪具有较高的可重复性及准确性。     

比色板标准与非标准色标识别差异的初探

目的 测试口腔修复学专业研究生对比色板标准色标与非标准色标颜色识别的差异,评价、分析口腔修复学专业研究生临床实际比色能力,为探讨临床比色教学方法提供客观的基础数据.方法 选择具有1～5年临床工作经验、排除色觉识别障碍、经过色彩学知识培训的口腔修复学专业研究生62名.从比色板A(Lineargnide)的29个标准色标中通过随机数字表抽取7个色标作为标准色标,以比色板B(Vita Bleachadgnide 3D-Master)中的7个色标作为非标准色标,在D55标准光源下,以比色板C(Vita 3D-Master)作为比色工具,对标准色标和非标准色标进行比色测试.计算受试者对两种色标比色的总体准确率;统计比色正确的人数分布,并进行Monte Carlo确切概率法检验;统计比色结果在明度、饱和度、色相上的等级偏差,并进行Wilcoxin符号秩和检验.结果 受试者对标准色标比色的总体正确率为45.9%(199/434),对非标准色标比色的总体正确率为9.0%(39/434);对两种色标比色正确的人数分布的差异有统计学意义(P<0.001);对两种色标比色结果的明度等级偏差[分别为0.2(0.1～0.3)、0.4(0.4～0.5)]、饱和度等级偏差[分别为0.2(0.1～0.4)、0.5(0.4～0.6)]的差异均有统计学意义(P<0.01),色相等级偏差[分别为0.3(0.1～0.4)、0.3(0.1～0.4)]的差异无统计学意义(P=0.079>0.01).结论 口腔修复学专业研究生对比色板非标准色标颜色的识别能力明显低于对标准色标颜色的识别能力.     

视觉比色机械训练系统对色彩识别能力的影响

目的：评价TTB视觉比色机械训练系统对受试者比色能力的影响.方法：使用TTB系统对102名受试者进行每周1次、共3周的视觉比色训练,记录每次TTB训练的成绩及时间,计算每次TTB测试的比色效率值.在训练前后均随机选29色Vita 3D-Master比色板的5个色标进行比色测试,计算比色平均色差及单项色彩因素选择正确率,做为培训前、后比色能力测试成绩.结果：TTB测试比色效率逐渐提高,三次测试效率之间的差异均有统计学意义（P＜0.01）;培训后比色能力测试中所选色片与目标色片的平均色差小于培训前比色平均色差,差异有统计学意义（P＜0.01）.经培训后受试学生对单项色彩因素选择正确率均高于培训前水平,差异有统计学意义（P＜0.01）.结论：视觉比色机械培训可提高受试者的色彩识别能力.     

Crystaleye比色仪比色与比色板比色的临床效果对七匕

目的：比较Crystaleye比色仪比色方法与Vita 3D Master比色板比色方法的临床应用效果.方法：对80例患者的103颗前牙采用随机分组的方法,分为两组,即比色仪组：40例患者（52颗前牙）;比色板组：40例患者（51颗前牙）.分别采用Crystaleye比色仪比色方法和Vita 3D Master比色板比色方法进行临床测色.制作修复体后,在口内再用C rystaleye比色仪对修复体和对照牙分别进行测色.分别计算两组修复体与对照牙的色差（△E）并评价患者对修复体颜色的满意度.结果：比色仪组的△E为（2.97±1.64）,比色板组的△E为（6.07±2.28）;t检验,差异有统计学意义（P＜0.05）.比色仪组的患者满意度整体水平高于比色板组;x2检验,差异有统计学意义.结论：Crystaleye比色仪与Vita 3D Master比色板相比：比色结果更准确,患者满意度更高.     

Crystaleye比色仪和目测法比色准确性的比较

目的比较Crystaleye比色仪和目测法比色的准确性。方法对21位受试者的左上颌中切牙分别用目测法和Crystaleye比色仪比色,并根据2种比色结果为每位受试者制作2个金属烤瓷冠,分别为目测组和Crys-taleye组,用Crystaleye比色仪测定每组金属烤瓷冠与天然牙颈、中、切色差ΔE、ΔL*、Δa*、Δb*值,对差值进行配对t检验(α=0.05)。每位受试者和2名医师分别对2个金属烤瓷冠颜色准确性进行评分,对2组得分进行t检验(α=0.05)。结果除金属烤瓷冠中部Δb*值外(P<0.05),2组ΔE、ΔL*、Δa*、Δb*值的差异均无统计学意义(P>0.05)。目测评分,Crystaleye组平均分为22.90分,目测组平均分为23.14分,2组差异无统计学意义(t=0.370,P=0.715)。结论临床上可用Crystaleye比色仪辅助医师比色。     

�ֹ��ȼ���ȫ����ɫ��Olympus Crystaleye�ٴ���ɫ���ظ����о�

目的    评价分光光度计型全牙比色仪Olympus Crystaleye临床比色的可重复性。方法    于2009年9—10月,使用分光光度计型全牙比色仪Olympus Crystaleye测试10名志愿者健康的左上颌中切牙中1／3色彩学参数,每个测试对象测色10次,分别记录其 [L   a   b   ]　　　值（CIE1976 [L   a   b   ]　　　）,并计算[L   a   b   ]　　　平均值。次日用相同方法再次测量并记录,同一测试对象再次测量结果与前次计算的[L   a   b   ]　　　平均值进行比较,计算平均色差值　　2-1,评价比色仪的可重复性。结果    　　2-1值范围为0.32～0.66。结论    使用分光光度计型全牙比色仪Olympus Crystaleye进行临床比色,有较高的可重复性。     

Crystaleye�Զ���ɫ���ڲ�����͸������ȫ�ɹڱ�ɫ��Ӧ���о�

目的探讨Crystaleye自动比色仪在玻璃渗透氧化铝全瓷冠修复中比色的临床效果。方法选择2009年3月至2010年3月于中国医科大学口腔医学院修复科就诊的前牙玻璃渗透氧化铝全瓷冠修复的患者119例(318颗患牙),随机分为对照组(157颗患牙)和试验组(161颗患牙),分别采用Vitapan 3D比色板和Crystaleye自动比色仪进行比色。修复后,用Crystaleye自动比色仪对各组修复体和比色参照的天然牙进行测色,计算每组修复体与天然牙的总色差(△E)和患者满意率。结果对照组和试验组的△E分别为(2.14±0.66)NBS、(1.78±0.52)NBS,差异有统计学意义(P<0.05)。对照组患者满意率为66.24%,试验组患者满意率为80.12%,差异有统计学意义(P<0.05)。结论使用Crystaleye自动比色仪能更好地指导玻璃渗透氧化铝全瓷冠的颜色复制,提高临床修复效果。     

Reliability of shade selection using an intraoral spectrophotometer

In this study, we evaluate the accuracy and reproducibility of human tooth shade selection using a digital spectrophotometer. Variability among examiners and illumination conditions were tested for possible influence on measurement reproducibility. Fifteen intact anterior teeth of 15 subjects were evaluated for their shade using a digital spectrophotometer (Crystaleye, Olympus, Tokyo, Japan) by two examiners under the same light conditions representing a dental laboratory situation. Each examiner performed the measurement ten times on the labial surface of each tooth containing three evaluation sides (cervical, body, incisal). Commission International on Illumination color space values for L* (lightness), a* (red/green), and b* (yellow/blue) were obtained from each evaluated side. Examiner 2 repeated the measurements of the same subjects under different light conditions (i.e., a dental unit with a chairside lamp). To describe measurement precision, the mean color difference from the mean metric was used. The computed confidence interval (CI) value 5.228 (4.6598-5.8615) reflected (represented) the validity of the measurements. Least square mean analysis of the values obtained by examiners 1 and 2 or under different illumination conditions revealed no statistically significant differences (CI = 95%). Within the limits of the present study, the accuracy and reproducibility of dental shade selection using the tested spectrophotometer with respect to examiner and illumination conditions reflected the reliability of this device. This study suggests that the tested spectrophotometer can be recommended for the clinical application of shade selection.     

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.     

Evaluation of a newly developed online color training system

This study evaluated a newly developed online color training system. The system incorporated basic color training, shade guide matching, and clinical shade selection simulation exercises. Thirty-seven dental students went through baseline Vita-Vita testing with VITA Classical shade guides and then practiced color training exercises with the system for 4 days; the same test was performed after the training program. The average correct match increased from 6.7 (41.88%) to 11.38 (71.13%) using the shade guides (P < .001) and from 9.67 (60.42%) to 13.06 (81.63%) using the color training system (P < .001). The effectiveness of the color training system in improving color-matching quality was confirmed.