Your enamel is the hardest substance in your body. It’s even stronger than some metals; however, it isn’t indestructible, and it can’t regenerate. The biggest threat to your enamel is tooth decay. Although cavities are preventable, 91% of adults have had at least one. Not to mention, 25% of adults have untreated decay. Brushing and flossing can combat harmful oral bacteria, but your diet is equally important. Besides limiting surgery foods, dental professionals recommend adding 3 cavity-fighting beverages to your day.