Cavities: How They Form and How to Prevent Them

How a cavity forms

Bacteria in your mouth feed on sugars and produce acid, which slowly dissolves tooth enamel. Left unchecked, that creates a hole, a cavity. That needs a filling.

How to prevent them

Brush twice daily with fluoride toothpaste, floss once a day, limit frequent sugary and acidic snacks and drinks, and see your dentist regularly. Dental sealants can protect children’s back teeth.

Catch them early

Early decay can sometimes be stopped or reversed before it needs a filling, which is one reason routine exams and cleanings matter.