Kermani Masood, Tabatabaei Yazdi Fatemeh, Abed Haghighi Matin
Faculty of Dentistry Islamic Azad University of Shiraz Shiraz Iran.
Faculty of Natural Resources and Environment Ferdowsi University of Mashhad Mashhad Iran.
Clin Exp Dent Res. 2019 Mar 4;5(3):191-198. doi: 10.1002/cre2.169. eCollection 2019 Jun.
Knowing the growth and developmental stages of a child or an adolescent allows for a comparison between their developmental and chronological age. The purpose of this study was to evaluate the accuracy of dental age estimation by Demirjian's method and to examine the applicability of Demirjian's method to Iranian children and adolescents. To do so, we investigated the relationship between chronological and dental age in a total of 158 children (81 female and 77 male) from Shiraz. The present study, for the first time, employs geometric morphometrics, a relatively new technique, to offer an accurate quantitative assessment of Demirjian's method. The correlation coefficient between chronological and dental age showed a significant relationship between dental age and chronological age. The average of the chronological age difference between girls and boys at the time of reaching the same stages of dental development was 0.77 years, which meant girls reached each stage of dental development 9 months earlier than their male peers. According to the results of this study, although the use of Demirjian's method in estimating the age of children in the city of Shiraz has acceptable accuracy, more precise studies are recommended to calibrate the method and develop a table adjusted to reflect development in the Iranian population.
了解儿童或青少年的生长发育阶段有助于对其发育年龄和实际年龄进行比较。本研究的目的是评估德米尔坚方法在估计牙齿年龄方面的准确性，并检验该方法对伊朗儿童和青少年的适用性。为此，我们调查了设拉子158名儿童（81名女性和77名男性）的实际年龄与牙齿年龄之间的关系。本研究首次采用几何形态测量学这一相对较新的技术，对德米尔坚方法进行准确的定量评估。实际年龄与牙齿年龄之间的相关系数表明牙齿年龄与实际年龄之间存在显著关系。在达到相同牙齿发育阶段时，女孩和男孩实际年龄的平均差异为0.77岁，这意味着女孩比同龄男孩提前9个月达到每个牙齿发育阶段。根据本研究结果，尽管在设拉子市使用德米尔坚方法估计儿童年龄具有可接受的准确性，但建议进行更精确的研究以校准该方法，并制定适合伊朗人群发育情况的表格。
