3. Chronology :
Defined as “a study which deals with the timings
of various stages of tooth development. starting
with the initiation of the first dental tissue laid down
to the emergence of tooth in the oral cavity and its
completion of calcification”.
CHRONOS : TIME
4. •Beginning of calcification:
Calcification is the accumulation of calcium salts in a body tissue. causing it to harden.
“various stages”BY ORDER:
•Crown completed.
•Eruption. ★
•Root completed.
9. CANINES
MAXI - MAND
•Beginning of calcification
•Crown completed.
4-5 months4-5 months
6-7 years6-7 years
11-12 years 9-10 years
13-15 years 12-14 years
•Eruption. ★
•Root completed.