Overview

Cavities are permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes. Cavities, also called tooth decay or caries, are caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks and not cleaning your teeth well.

Cavities and tooth decay are among the world's most common health problems. They're especially common in children, teenagers and older adults. But anyone who has teeth can get cavities, including infants.

If cavities aren't treated, they get larger and affect deeper layers of your teeth. They can lead to a severe toothache, infection and tooth loss. Regular dental visits and good brushing and flossing habits are your best protection against cavities and tooth decay.

July 19, 2017
References
  1. Caries. Merck Manual Professional Version. http://www.merckmanuals.com/professional/dental-disorders/common-dental-disorders/caries. Accessed March 3, 2017.
  2. Dental caries (tooth decay). Centers for Disease Control and Prevention. https://www.cdc.gov/healthywater/hygiene/disease/dental_caries.html. Accessed March 3, 2017.
  3. Water fluoridation basics. Centers for Disease Control and Prevention. https://www.cdc.gov/fluoridation/basics/index.htm. Accessed March 3, 2017.
  4. About dental amalgam fillings. U.S. Food and Drug Administration. https://www.fda.gov/MedicalDevices/ProductsandMedicalProcedures/DentalProducts/DentalAmalgam/ucm171094.htm. Accessed March 4, 2017.
  5. Dental sealants prevent cavities. Centers for Disease Control and Prevention. https://www.cdc.gov/vitalsigns/dental-sealants/. Accessed March 3, 2017.
  6. The tooth decay process: How to reverse it and avoid a cavity. National Institute of Dental and Craniofacial Research. https://www.nidcr.nih.gov/OralHealth/OralHealthInformation/ChildrensOralHealth/ToothDecayProcess.htm#. Accessed March 3, 2017.
  7. Root canals. American Dental Association. http://www.mouthhealthy.org/en/az-topics/r/root-canals. Accessed March 4, 2017.
  8. Cavities. American Dental Association. http://www.mouthhealthy.org/en/az-topics/c/cavities. Accessed March 3, 2017.
  9. Anorexia nervosa. American Dental Association. http://www.ada.org/en/member-center/oral-health-topics/anorexia-nervosa. Accessed March 4, 2017.
  10. AskMayoExpert. Dental caries. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2017.
  11. Dry mouth. National Institute of Dental and Craniofacial Research. https://www.nidcr.nih.gov/OralHealth/Topics/DryMouth/DryMouth.htm#. Accessed March 4, 2017.
  12. Nutrition: What you eat affects your teeth. American Dental Association. http://www.mouthhealthy.org/en/nutrition/food-tips. Accessed March 4, 2017.
  13. Wright JT, et al. Evidence-based clinical practice guideline for the use of pit-and-fissure sealants. Journal of the American Dental Association. 2016;147:672.
  14. Salinas TJ (expert opinion). Mayo Clinic, Rochester, Minn. March 17, 2017.