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Table 2 Reference values for dental age estimation among 520 young Ugandans using Demirjian’s classification

From: Accuracy of the lower third molar radiographic imaging to estimate age among Ugandan young people

Demirjian stage Tooth 48 (n = 510) Tooth 38 (n = 501)
No. Median LQ, UQ Mean (SD) No. Median LQ, UQ Mean (SD)
A 2 10 10, 10 10 (0.0) 1 10 10 (0.0)
B 16 10 10, 11.5 10.9 (1.4) 13 10 10, 11.5 10.8 (1.2)
C 83 11 11, 12 11.7 (1.5) 85 11 11, 12 11.7 (1.5)
D 61 12 11, 14 12.6 (1.6) 62 13 11, 14 12.6 (1.5)
E 68 14 13, 15 13.9 (1.5) 62 14 13, 15 13.9 (1.6)
F 59 15 14, 16 15.4 (1.6) 63 15 14, 17 15.4 (1.7)
G 96 18.5 17, 20 18.4 (1.6) 93 19 17, 20 18.5 (1.6)
H 125 21 19, 22 20.1 (1.8) 122 21 19, 22 20.3 (1.7)
  1. LQ and UQ represent lower quartile and upper quartile respectively. A–H are the eight stages of Demirjian’s classification. The difference between the sample number, 520 and number of teeth on each side (Right—510 and left—501) is accounted for by missing teeth or those that had not yet commenced mineralisation