Q1. The adult human dental formula is:
A \frac{2112}{2112}
B \frac{2122}{2122}
C \frac{2123}{2123} Correct
D \frac{2213}{2213}
Explanation
The adult human dentition in one half of each jaw has 2 incisors, 1 canine, 2 premolars and 3 molars. Written as a dental formula, this becomes 2123 over 2123, and doubling it for both sides gives 32 permanent teeth. The formula 2112 leaves out the full molar count. The formula 2122 gives only two molars, which matches neither the standard adult permanent set nor the full count of 32. The formula 2213 incorrectly gives two canines, whereas humans have one canine in each half-jaw.