Cavities & Tooth Decay: How It Works, Explained Simply

Video Transcript

Cavities form when bacteria and sugar slowly damage a tooth. Bacteria in plaque feed on sugar and release acid onto the enamel. The acid pulls minerals from the enamel, leaving a weak white spot. Over time, the enamel breaks down and a small hole forms. The decay then spreads into the softer dentin beneath the enamel. A dentist removes the decay and fills the space to restore the tooth. Brushing, flossing, and less sugar help keep cavities away. This video is for general education only. It is not medical or dental advice. Ask your dentist what's right for you.