Why do teeth have enamel?

Short answer

Enamel forms a hard surface that protects the inside of a tooth from chewing forces, temperature, and acids.

How it works

Enamel is one of the hardest tissues in the body, but lost enamel does not readily grow back naturally.

Key point

Although enamel is hard, it does not easily grow back after it is lost, so protecting it matters.

References

• National Institute of Arthritis and Musculoskeletal and Skin Diseases: Learning about skin
• National Institute of Dental and Craniofacial Research: Oral health