Violation
Permanent first molars begin calcification at
birth.
1 to 4 months in utero.
3 to 6 months.
7 to 11 months.
12 to 15 months.
Permanent first molars begin calcification at
birth.
1 to 4 months in utero.
3 to 6 months.
7 to 11 months.
12 to 15 months.