DefinitionBy Mayo Clinic staff
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|Types of cavities|
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, not cleaning your teeth well, frequent snacking and sipping sugary drinks.
Cavities and tooth decay are among the world's most common health problems. They're especially common in children, teenagers and older adults. But anyone who has teeth can get cavities, including infants.
If cavities aren't treated, they get larger and affect deeper layers of your teeth. They can lead to severe toothache, infection and tooth loss. Regular dental visits and good brushing and flossing habits go a long way toward preventing cavities and tooth decay.
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