Estimating the color of maxillary central incisors based on age and gender.
Estimating the color of maxillary central incisors based on age and gender.
复制标题
根据年龄和性别估计上颌中枢的颜色。
DOI：
10.1016/s0022-3913(08)60155-9
复制
发表时间：
2008-08
影响因子：
4.6
通讯作者：
Wee, Alvin G.
中科院分区：
文献类型：
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作者：
Gozalo-Diaz, David;Johnston, William M.;Wee, Alvin G.
目前还没有关于无牙患者选择牙齿颜色的科学信息。本研究的目的是评估线性回归模型，该模型可用于根据牙齿受试者的某些特征来预测无牙合患者中切牙的颜色参数。将光谱仪和外部光源设置为非接触式45/0度(45度照度和0度观察者)光学配置，以测量受试者重要的头面部结构(上颌中切牙、附着性牙龈和面部皮肤)的颜色。受试者(n=120)被分成5个年龄组，4个种族组，性别平衡。采用线性一阶回归方法确定上颌中切牙颜色各颜色方向预测模型中的显著因素(α=0.05)。年龄、性别和其他颅面结构的颜色被作为潜在的预测因素进行研究。每个颜色方向的最终预测只基于统计学上的显著因素，然后计算和总结中切牙CIELAB值的观测值和预测值之间的色差。年龄和性别的有统计学意义的预测因子占L总变异度的36%。具有统计学意义的年龄预测因子在a*中占总变异性的16%。年龄和性别的有统计学意义的预测因素解释了b*变异性的21%。中切牙CIELAB值预测值与实测值之间的ΔE(SD)平均值为5.8(3.2)。年龄和性别在预测中切牙的自然颜色方面被发现是具有统计学意义的决定因素。虽然这些预测的精度低于所有被研究牙齿的中位数色差，可以被认为是一个可接受的精度，但需要进一步的研究才能将这种精度降低到检测的极限。临床意义年龄与中切牙的自然颜色高度相关。随着年龄的增长，中切牙变得更黑、更红、更黄。此外，在这项研究中，女性受试者的中门牙比男性的更浅，黄色更少。
There is no scientific information regarding the selection of the color of teeth for edentulous patients. The purpose of this study was to evaluate linear regression models that may be used to predict color parameters for central incisors of edentulous patients based on some characteristics of dentate subjects. A spectroradiometer and an external light source were set in a noncontacting 45/0 degree (45-degree illumination and 0-degree observer) optical configuration to measure the color of subjects’ vital craniofacial structures (maxillary central incisor, attached gingiva, and facial skin). The subjects (n=120) were stratified into 5 age groups with 4 racial groups and balanced for gender. Linear first-order regression was used to determine the significant factors (α=.05) in the prediction model for each color direction of the color of the maxillary central incisor. Age, gender, and color of the other craniofacial structures were studied as potential predictors. Final predictions in each color direction were based only on the statistically significant factors, and then the color differences between observed and predicted CIELAB values for the central incisors were calculated and summarized. The statistically significant predictors of age and gender accounted for 36% of the total variability in L*. The statistically significant predictor of age accounted for 16% of the total variability in a*. The statistically significant predictors of age and gender accounted for 21% of the variability in b*. The mean ΔE (SD) between predicted and observed CIELAB values for the central incisor was 5.8 (3.2). Age and gender were found to be statistically significant determinants in predicting the natural color of central incisors. Although the precision of these predictions was less than the median color difference found for all pairs of teeth studied, and may be considered an acceptable precision, further study is needed to reduce this precision to the limit of detection. Clinical Implications Age is highly correlated with the natural color of the central incisors. When age increases, the central incisor becomes darker, more reddish, and more yellow. Also, the women subjects in this study had lighter and less yellow central incisors than the men.