الفهرس 
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Abstract
To assess the dental age using the modified Demirjian’s method to verify the ongoing applicability of the method for estimation of chronological age in a group of Egyptian children.
Study design: Dental age of 200 Egyptian children was estimated from digital panoramic records using the modified Demirjian’s method. Each tooth was given a score from A to H based on the stage of maturation. Using the OnyxCeph 3TM software, patient’s panoramic radiograph, birth date, gender and the A-H scores for the seven teeth were fed into to calculate the dental age for each child separately. Both chronological and dental ages for each child were compared with each other. The child’s chronological age is considered the gold standard.
Results: Regarding all age categories of the girls, there was no statistically significant difference between chronological and dental ages, however dental age showed higher mean values than chronological age in all age categories. Regarding the boys aged 8½: ≤ 9 years, chronological age showed statistically significantly higher mean value than dental age, however the other age categories; there was no statistically significant difference between chronological and dental ages. Dental age in boys showed higher mean values than chronological age in 8: ≤ 8½ y and 9½ – 10 y age categories, while chronological age showed higher mean values than dental age in 8½: ≤ 9 y and 9: ≤ 9½ y age categories.
Conclusions: The modified Demirjian’s method is still applicable for Egyptian children between 8 and 10 years. No statistically significant difference was observed between chronological and dental ages in girls at all age groups. No statistically significant difference was observed between chronological and dental ages in boys at all age groups except for age group 8½: ≤9 years. Girls showed advanced dental maturation than boys.