Question

Which of the following correctly represents the normal adult human dental formula?

• A. $\frac{2133}{2123}$
• B. $\frac{3133}{3123}$
• C. $\frac{3131}{3121}$
• D. $\frac{2123}{2123}$

Answer 1

The correct option is D $\frac{2123}{2123}$

• The number of teeth of each type is written as a dental formula for one side of the mouth, or quadrant, with the upper and lower teeth shown on separate rows.
• The number of teeth in a mouth is twice that listed as there are two sides. In each set, incisors (I) are indicated first, canines (C) second, premolars (P) third, and finally molars (M), giving I:C:P:M. The formula 2.1.2.3 for upper teeth indicates 2 incisors, 1 canine, 2 premolars, and 3 molars on one side of the upper mouth.
  Hence, the correct option is D.