Root decay

Root decay is a cavity on the root of a tooth. It often follows gum recession. When gums pull away from the teeth, the roots are exposed to plaque. Tooth roots are covered with cementum, a softer tissue than enamel. They are susceptible to decay and are more sensitive to touch and to hot and cold.

It is common for people over age 50 to have tooth-root decay. Dry mouth from medicines can add to the risk. Decay around the edges of old fillings is also common in older adults.

Careful brushing with fluoride toothpaste and cleaning between teeth help. So do regular dental visits. A dentist can check the roots at an exam and repair decay with a dental filling when needed. Our office describes this on its dental fillings page.