No, Coca‑Cola will not dissolve teeth overnight. It is true that foods or drinks that contain sugar and are acidic, including soft drinks, can contribute to tooth decay and erosion, especially if you consume them frequently. Experts including the World Health Organization and the American Dental Association agree that the proper use of fluoride, along with good oral hygiene that includes regular dental check-ups, is the primary behavior needed to reduce the risk of tooth decay or erosion.