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Q.

Name Different Types of Teeth and Their Number in an Adult Human?

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Detailed Solution

An adult human has four types of teeth – incisors, canines, premolars, and molars – with a total of 32 teeth. The teeth in human beings are specialized to perform different functions like cutting, tearing, and grinding food. Adult humans normally have 32 permanent teeth, arranged in each jaw (upper and lower). These teeth are classified into four main types:

Types and Numbers of Teeth

Type of ToothNumber in AdultsMain Function
Incisors8 (4 upper, 4 lower)Cutting and biting food
Canines4 (2 upper, 2 lower)Tearing and holding food
Premolars8 (4 upper, 4 lower)Crushing and grinding food
Molars12 (6 upper, 6 lower including wisdom teeth)Chewing and grinding food

Dental Formula

The dental formula of an adult human is:

2:1:2:3 / 2:1:2:3 × 2 = 32

This means per half of each jaw, there are 2 incisors, 1 canine, 2 premolars, and 3 molars.

Functions of Different Teeth

  • Incisors: Sharp-edged teeth for cutting food.
  • Canines: Pointed teeth for tearing and ripping meat.
  • Premolars: Flat surface teeth for crushing food.
  • Molars: Largest teeth used for proper chewing and grinding.
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Name Different Types of Teeth and Their Number in an Adult Human?