True about dentition are all except
The first tooth to erupt in primary dentition is the lower central incisor at 6-10 yrs of age, and in upper jaw at the age of 8-12 yrs. Whilst the canine in primary dentition appears at the age of 16-22 yrs, in the upper jaw. Ref: Ghai, 9th edition, Table 2.2.
Hypothyroidism causes delayed dentition
Premolar is not seen in primary dentition
Third molar is last to appear in secondary dentition
Canine is the first in primary dentition
General anatomy