Kurita Lucio Mitsuo, Menezes Alynne Vieira, Casanova Marcia Spinelli, Haiter-Neto Francisco
University of Fortaleza, Fortaleza, CE, Brazil.
J Appl Oral Sci. 2007 Apr;15(2):99-104. doi: 10.1590/s1678-77572007000200005.
The purpose of this investigation was to evaluate the applicability of the methods proposed by Nolla and by Nicodemo and colleagues for assessing dental age and its correlation to chronological age.
Panoramic radiographs of 360 patients from the city of Fortaleza (CE, Brazil) aged 7-15 years were used to assess the associations between dental and chronological age. Data were submitted to statistical analysis using the BioEstat 2.0 (2000) software. Student-Neuman-Keuls test was performed and Pearson's correlation coefficients were calculated at 5% significance level.
When the Nolla method was applied, the mean difference between true and estimated age for males and females was underestimated. The use of the method proposed by Nicodemo and colleagues also resulted in underestimation, although it was more evident in male subjects. The correlation coefficients between chronological age and estimated dental age were high, with mean values ranging between 0.87 and 0.91 for males and between 0.84 and 0.93 for females.
Although both methods proved to be reliable in estimating age, the use of correction factors is recommended.
本研究旨在评估诺拉（Nolla）方法以及尼科德莫（Nicodemo）及其同事所提出的方法在评估牙龄方面的适用性及其与实际年龄的相关性。
使用来自巴西福塔雷萨市360名7至15岁患者的全景X线片来评估牙龄与实际年龄之间的关联。数据使用BioEstat 2.0（2000）软件进行统计分析。进行学生-纽曼-凯尔斯（Student-Neuman-Keuls）检验，并在5%显著性水平下计算皮尔逊相关系数。
应用诺拉方法时，男性和女性的实际年龄与估计年龄之间的平均差异被低估。使用尼科德莫及其同事提出的方法也导致低估，但在男性受试者中更为明显。实际年龄与估计牙龄之间的相关系数很高，男性平均值在0.87至0.91之间，女性在0.84至0.93之间。
尽管两种方法在估计年龄方面都被证明是可靠的，但建议使用校正因子。
