Coffee, among other beverages, stains your teeth because of one ingredient in particular that provides the distinctive flavor of your favorite drinks. “Many drinks such as coffee, tea, and wine contain tannins, an organic substance found in plants. When the tannins build up on the teeth from drinking the beverages, they form stains,” explains Beverly Hills periodontist and cosmetic surgeon Dr Mahnaz Rashti. “Additionally, the enamel is porous. The stain from the drinks penetrates into the microscopic holes causing long-term staining of the teeth.”
Dr. Banić