Sex Subjects (30) Mean Chronological Age Mean Estimated Age by Indian Formula ± SD Mean Estimated Age by Demirjian Formula ± SD Mean Absolute Error ± SD by Indian Formula Mean Absolute Error ± SD by Demirjian Formula
Males 7 17.84±4.018 17.19±1.836 14.94±0.947 –0.65±2.745 –2.90±3.205
Females 23 15.72±2.57 16.41±2.214 13.71±1.223 0.68±1.189 –2.02±1.519
P value   0.405 0.021 0.071 0.011
Table 4: Mean and standard deviation for the mineralization stages of mandibular third molar in males and females in the orthodontic group.