NEET Solved Paper 2017 Question 64

Question: A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?

Options:

A) Molars

B) Incisors

C) Canines

D) Pre-molars

Show Answer

Answer:

Correct Answer: D

Solution:

  • At the age of two years, a child typically has a set of primary (baby) teeth. A full set of primary teeth consists of 20 teeth, which includes:
  • 8 Incisors (4 upper and 4 lower)
  • 4 Canines (2 upper and 2 lower)
  • 8 Molars (4 upper and 4 lower)

Primary teeth do not include premolars. Premolars are part of the permanent teeth set, which begin to appear around the age of 6 years.

Given that the boy had twenty teeth, it indicates he had a complete set of primary teeth. Therefore, the teeth that were absent are the premolars.