Definition
Tooth enamel is the hard, protective outer layer of your teeth. It's the body's hardest substance, acting like a shield against wear and tear. Enamel protects the inner layers of the tooth from acids, bacteria, and temperature extremes. While incredibly strong, enamel can be damaged by acid erosion from sugary drinks and foods. Unlike bone, enamel doesn't contain living cells, so it can't repair itself. Maintaining good oral hygiene is vital for preserving your tooth enamel.