Can tooth decay be reversed?

In the early stages, tooth decay can be reversed through remineralization. This involves using fluoride, either through fluoride toothpaste, mouthwash, or professional treatments at the dentist, to help restore the minerals in the enamel. Additionally, improving oral hygiene and reducing sugar intake can help halt the progression of early decay. However, once a cavity has formed and the enamel is permanently damaged, the decay cannot be reversed and will require treatment, such as a filling or crown, to restore the tooth.