Cavities Underlying Cause
Bacteria are normally present in the mouth. They convert sugars and starches into acids. A combination of bacteria, acid, food, and saliva form a sticky coating on the teeth, called plaque. The acid in the plaque damages the tooth enamel, which results in the formation of a cavity.
As a cavity grows larger, the acid can reach the nerve inside the tooth and destroy it. Once this happens, the tooth dies and falls out.
Plaque can crystallize to form a very hard coating, called tartar. Plaque and tartar can also cause gingivitis and dental abscesses.
Continue to Cavities Anatomy
- Brook I. Microbiology and management of endodontic infections in children. J Clin Pediatr Dent. 2003 Fall;28(1):13-7. 
- Douglass AB, Douglass JM. Common dental emergencies. Am Fam Physician. 2003 Feb 1;67(3):511-6. 
- Preshaw PM. Antibiotics in the treatment of periodontitis. Dent Update. 2004 Oct;31(8):448-50, 453-4, 456. 
- Roberts A. Bacteria in the mouth. Dent Update. 2005 Apr;32(3):134-6, 139-40, 142. 
- Wayne DB, Trajtenberg CP, Hyman DJ. Tooth and periodontal disease: a review for the primary-care physician. South Med J. 2001 Sep;94(9):925-32.