Tooth decay camera.gif is damage that occurs when germs (bacteria) in your mouth make acids that eat away at a tooth. It can lead to a hole in the tooth, called a cavity. If not treated, tooth decay can cause pain, infection, and tooth loss.
A tooth has three layers:
- The hard outer layer is called enamel
- The middle layer is called dentin
- The center of the tooth is called the pulp. It contains nerves and blood vessels