The role of fluoride:

Fluoride strengthens tooth enamel in two ways: When a person's teeth begin to erupt, this ingredient forms the enamel, making it hard and resistant to cavities and cavities. As your teeth grow in, fluoride in toothpaste, mouthwash, and even tap water helps your enamel stay strong so it can resist the acids produced by oral bacteria when you eat sugary foods. Fluoride also has a remineralizing effect on teeth, rebuilding worn or weakened enamel before it disappears.