Gungor O Erken, Kale B, Celikoglu M, Gungor A Y, Sari Z
Department of Orthodontics, Faculty of Dentistry, University of Akdeniz, Antalya, Turkey.
Niger J Clin Pract. 2015 Sep-Oct;18(5):616-9. doi: 10.4103/1119-3077.154216.
The aim of this study was to evaluate the applicability of the Demirjian method for southern Turkish population.
Panoramic radiographs of 535 patients (276 females, 259 males aged from 10 to 18 years) selected retrospectively. Dental age was calculated using the Demirjian's method. Chronologic age was calculated by subtracting the date of the birth from the date of the panoramic radiograph after having converted both to a decimal age. The chronologic and dental ages were compared using the paired t-test.
The mean difference between the chronologic and dental ages ranged from 0.02 to 0.79 years in females. These differences in females between the chronologic and dental ages were statistically significant in total (P < 0.050) and in G1 (10-10.90 years) (P < 0.010) and G2 (11-11.90 years) (P < 0.001). The mean difference between the chronologic and dental ages ranged from 0.04 to 0.85 years in males. These differences in males between the chronologic age and dental age were statistically significant in total (P < 0.010) and in G4 (13-13.90 years) G5 (14-14.90 years) G6 (15-15.90 years) groups (P < 0.050).
It is appropriate to use the Demirjian method in southern Turkish children; however, a revision is needed in some age groups.
本研究旨在评估德米尔坚方法在土耳其南部人群中的适用性。
回顾性选取535例患者（276名女性，259名男性，年龄在10至18岁之间）的全景X线片。使用德米尔坚方法计算牙龄。将全景X线片日期和出生日期均换算为十进制年龄后，通过从全景X线片日期中减去出生日期来计算实足年龄。使用配对t检验比较实足年龄和牙龄。
女性的实足年龄与牙龄之间的平均差异在0.02至0.79岁之间。女性实足年龄与牙龄之间的这些差异在总体上具有统计学意义（P < 0.050），在G1组（10至10.90岁）（P < 0.010）和G2组（11至11.90岁）（P < 0.001）中也具有统计学意义。男性的实足年龄与牙龄之间的平均差异在0.04至0.85岁之间。男性实足年龄与牙龄之间的这些差异在总体上具有统计学意义（P < 0.010），在G4组（13至13.90岁）、G5组（14至14.90岁）、G6组（15至15.90岁）中也具有统计学意义（P < 0.050）。
在土耳其南部儿童中使用德米尔坚方法是合适的；然而，在某些年龄组中需要进行修正。
