Abstract：
OBJECTIVE: To estimate the age of an individual based on 3D radiographic evaluation of pulp width of maxillary central incisor.
METHODS: This study included 185 CBCT images of individuals within age range of 14-64 years. Images were evaluated for maxillary central incisors and pulp width measurements were taken from cementoenamel junction and middle third of root. Obtained data was subjected to correlation and regression analysis from which the age of an individual was predicted. Results of the present study were compared with another study by the same authors.
RESULTS: A negative linear relationship was obtained between age and pulp width. The standard error of estimate (SEE) in sagittal section was 11.36 years and that in coronal section was 11.23 years. The coefficient of determination for sagittal section was 0.107 and for coronal section was 0.127. An obtained regression formula was highly significant. Division of samples into various age groups reduced SEE drastically.
CONCLUSIONS: It can be concluded that pulp width of maxillary central incisor is a reliable indicator of age estimation.
METHODS: This study included 185 CBCT images of individuals within age range of 14-64 years. Images were evaluated for maxillary central incisors and pulp width measurements were taken from cementoenamel junction and middle third of root. Obtained data was subjected to correlation and regression analysis from which the age of an individual was predicted. Results of the present study were compared with another study by the same authors.
RESULTS: A negative linear relationship was obtained between age and pulp width. The standard error of estimate (SEE) in sagittal section was 11.36 years and that in coronal section was 11.23 years. The coefficient of determination for sagittal section was 0.107 and for coronal section was 0.127. An obtained regression formula was highly significant. Division of samples into various age groups reduced SEE drastically.
CONCLUSIONS: It can be concluded that pulp width of maxillary central incisor is a reliable indicator of age estimation.
摘要：
目的：基于上颌中切牙牙髓宽度的3D影像学评估来估计个体的年龄。
方法：本研究包括185张年龄范围为14-64岁的个体的CBCT图像。评估上颌中切牙的图像，并从牙釉质交界处和根部中部三分之一处进行牙髓宽度测量。对获得的数据进行相关性和回归分析,由此预测个体的年龄。本研究的结果与同一作者的另一项研究进行了比较。
结果：在年龄和纸浆宽度之间获得了负线性关系。矢状切面的标准误差（SEE）为11.36年，冠状切面的标准误差为11.23年。矢状切面的确定系数为0.107，冠状切面的确定系数为0.127。得到的回归公式是高度显著的。将样本分成不同的年龄组会大大降低SEE。
结论：可以得出结论，上颌中切牙的牙髓宽度是年龄估计的可靠指标。
方法：本研究包括185张年龄范围为14-64岁的个体的CBCT图像。评估上颌中切牙的图像，并从牙釉质交界处和根部中部三分之一处进行牙髓宽度测量。对获得的数据进行相关性和回归分析,由此预测个体的年龄。本研究的结果与同一作者的另一项研究进行了比较。
结果：在年龄和纸浆宽度之间获得了负线性关系。矢状切面的标准误差（SEE）为11.36年，冠状切面的标准误差为11.23年。矢状切面的确定系数为0.107，冠状切面的确定系数为0.127。得到的回归公式是高度显著的。将样本分成不同的年龄组会大大降低SEE。
结论：可以得出结论，上颌中切牙的牙髓宽度是年龄估计的可靠指标。
