Understanding Primary and Permanent Teeth: A Comprehensive Guide

Primary teeth, also known as baby teeth or milk teeth, are the first set of teeth that develop in humans. They begin to erupt at around 6 months of age and are usually all in place by age 3. Primary teeth are smaller and whiter than permanent teeth, and they have thinner enamel. They also have shorter roots and are more prone to decay.

Permanent teeth begin to erupt around age 6 and continue to come in until around age 21. They are larger and stronger than primary teeth, and they have thicker enamel. Permanent teeth also have longer roots and are less prone to decay.

There are a total of 32 permanent teeth, including:

* 8 incisors (4 upper, 4 lower)

* 4 canines (2 upper, 2 lower)

* 8 premolars (4 upper, 4 lower)

* 12 molars (6 upper, 6 lower)

Wisdom teeth are the last molars to erupt, and they usually come in between the ages of 17 and 25. Not everyone has wisdom teeth, and they can be removed if they cause problems.