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Alternative Names Return to topPeriapical abscess; Dental abscess; Tooth infection; Abscess - tooth
Definition Return to top
A tooth abscess is a collection of infected material (pus) resulting from a bacterial infection in the center of a tooth.
Causes Return to top
A tooth abscess is a complication of tooth decay. It may also result from trauma to the tooth, such as when a tooth is broken or chipped. Openings in the tooth enamel allow bacteria to infect the center of the tooth (the pulp). Infection may spread out from the root of the tooth and to the bones supporting the tooth.
Infection results in a collection of pus (dead tissue, live and dead bacteria, white blood cells) and swelling of the tissues within the tooth. This causes a painful toothache. If the root of the tooth dies, the toothache may stop, unless an abscess develops. This is especially true if the infection remains active and continues to spread and destroy tissue.
Symptoms Return to top
The main symptom is a severe toothache. The pain is continuous and may be described as gnawing, sharp, shooting, or throbbing.
Other symptoms may include:
Exams and Tests Return to top
The patient will feel pain when the dentist taps the tooth. Biting or closing the mouth tightly also increases the pain. The gums may be swollen and red and may drain thick material.
Treatment Return to top
The goals of treatment are to cure the infection, save the tooth, and prevent complications.
Antibiotics may be given to fight the infection. Warm salt-water rinses may be soothing. Over-the-counter pain relievers may relieve the toothache and fever.
Do NOT place aspirin directly over the tooth or gums, because this increases irritation of the tissues and can result in mouth ulcers.
A root canal may be recommended in an attempt to save the tooth.
If there is a severe infection, the tooth may be removed or surgery may be needed to drain the abscess. Some people may need to be admitted to the hospital.
Outlook (Prognosis) Return to top
Untreated abscesses may get worse and can lead to life-threatening complications.
Prompt treatment usually cures the infection. The tooth can usually be saved in many cases.
Possible Complications Return to top
When to Contact a Medical Professional Return to top
Call your dentist if you have a persistent, throbbing toothache.
Prevention Return to top
Prompt treatment of dental caries reduces the risk of tooth abscess. Traumatized teeth should be examined promptly by the dentist.Update Date: 5/28/2008 Updated by: Jason S. Baker, DMD, Oral and Maxillofacial Surgeon, Private Practice, Yonkers, New York. Review provided by VeriMed Healthcare Network.