Enamel erosion is the gradual wearing away of the tooth’s protective outer layer, often caused by exposure to acids. Common causes include consuming acidic foods and drinks like citrus fruits, soda, and wine, as well as conditions like acid reflux or frequent vomiting. Over time, enamel erosion can lead to tooth sensitivity, discoloration, and increased risk of cavities. Once enamel is lost, it cannot be regenerated, making prevention and early intervention crucial. Treatments focus on protecting teeth, reducing acid exposure, and using fluoride products to strengthen enamel.