Anatomy and conditions
Enamel
The hard, outer layer of a tooth that protects the softer parts underneath.
Enamel is the hard outer surface of the visible part of a tooth. It protects the layers beneath from the daily wear of chewing and from acids made by mouth bacteria. Enamel cannot grow back once it is lost, although fluoride can help strengthen it and repair very early damage. Acidic foods and drinks, grinding and decay can wear it down. Patients often call thin enamel the reason for sensitivity.
Example at the front desk
The hygienist noted worn enamel and suggested a fluoride treatment.