Teeth

Teeth are extremely useful. They help you to tear, cut and break up your food into very small pieces so you can swallow it more easily.
Digestion starts in your mouth with your teeth.
A human baby has 20 baby or milk teeth. These start to develop at about 6 months old and last until you are about 5 - 6 years old.
An human adult has 32 teeth called permanent teeth. These start to grow when you are about 5 -6 years old. They replace your milk teeth.
You only have two sets of teeth in your life - take great care of them.
Having straight teeth is important. Teeth that are crooked or out of place (misaligned) affect the way a person chews and talks and how their smile looks. Because they have unnatural spaces, crooked teeth are harder to clean and are more likely to have cavities.
In some cases, crooked teeth can affect the way the jaws line up and can cause pain and discomfort.
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