Question

Which one of the following represents the dental formula of a five year old human male?

• A. $\frac{2123}{2123}$
• B. $\frac{2102}{2102}$
• C. $\frac{3131}{3121}$
• D. $\frac{2133}{2123}$

Answer 1

The correct option is B $\frac{2102}{2102}$

There are only 20 teeth present in children that are termed as deciduous teeth or milk teeth. There are 10 teeth in each arch (both the top and bottom of the jaw) and five in each quadrant, including two incisors, one canine and two molars. There is not a single premolar present in milk teeth. So, the dental formula of a five year old human male is
$\frac{2102}{2102}$.