Teeth are used to help break down food.
Humans form 2 sets of teeth over the course of their lives.
The first set (sometimes called baby teeth) features 20 teeth.
The second set (sometimes called adult teeth) features 32 teeth.
Baby teeth are usually replaced by adult teeth between the ages of 6 and 12.
Humans have a variety of teeth including molars, premolars, canines and incisors.
Incisors help bite pieces from food.
Canines help hold and tear food apart.
Molars help grind food.
Teeth are covered in a hard substance called enamel.
Teeth are surrounded by gums.
Cavities can damage a tooth if left untreated.
Braces are often used to help straighten or align teeth.
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