Cavities are permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes. Cavities, also called tooth decay or caries, are caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks and not cleaning your teeth well.

What causes tooth decay?

Bacteria, acid, food and saliva mix to form plaque. This sticky substance coats the teeth. Without proper brushing and flossing, acids in plaque dissolve tooth enamel, creating cavities, or holes.

Can tooth decay be cured?

Although the early stages of tooth decay can be reversed, cavities don't heal naturally. According to the Mayo Clinic, professional fluoride treatments can repair weakened enamel and reverse a cavity in its earliest stages.