upper central incisor
7/8 years
upper lateral incisors
8/9 years
upper canine
11/12 years
upper and lower 1st and 2nd premolar
10-12 years
upper and lower 1st molar
6/7 years
upper and lower 2nd molar
12/13 years
upper and lower 3rd molars
17-21 years
lower central incisor
6/7 years
Lower lateral incisors
7/8 years
lower canines
9/10 years
upper A
7.5 months
Lower A
6.5 months
upper B
8 months
lower B
7
upper and lower C
16-20 months
upper and lower D
12-16 months
Upper and lower E
20-30 months