A cavity is a hole in a tooth that develops from tooth decay. Cavities form when acids in your mouth wear down (erode) your tooth’s hard outer layer (enamel). Anyone can get a cavity. Proper oral hygiene and regular dental cleanings can prevent cavities.
Another name for tooth cavities is dental caries.
Tooth decay can happen at any age, although cavities are more common in children. This is because many children don’t brush properly or regularly enough and they tend to consume more sugary foods and drinks.
Many adults also get cavities. Sometimes, new decay develops around the edges of cavities treated in childhood. Adults are also more likely to have receding gums. This condition exposes your teeth roots to plaque, which can cause cavities.
Once a hole forms in your tooth, a dentist drills out the decayed tissue and fills the hole. Dental fillings consist of composite resin (a tooth-colored material), silver amalgam
Proper oral hygiene, including regular brushing and flossing, can get rid of plaque, acids and cavity-causing bacteria.
What does a cavity feel like?
It depends on the severity of tooth decay. For instance, if you have a very small cavity that only affects your enamel, you won’t feel it. But when decay reaches the inner layers of your tooth, you may experience pain or sensitivity to heat, cold or sweets. (Teeth sensitivity doesn’t always mean you have a cavity. But it’s a good idea to get it checked out, just in case.)
