Root canal
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Root canal

Definition

A root canal is a dental procedure to remove dead or dying nerve tissue and bacteria from inside a tooth.

Alternative Names

Endodontic therapy

Description

A dentist will use a needle to place numbing medicine (anesthetic) around the bad tooth. You may feel a slight prick when the needle is being inserted.

Next, your dentist uses a tiny drill to remove the top part of your tooth and expose the pulp. Pulp is made up of nerves, blood vessels, and connective tissue. It is found inside the tooth and runs to the jaw bone. Pulp supplies blood to a tooth and allows you to feel sensations such as temperature.

The infected pulp is removed with special tools called files. The canals (tiny pathways inside the tooth) are cleaned. Medicines may be placed into the area to make sure all the germs are gone and prevent further infection.

The cleaned tooth area is sealed with a soft, temporary material. Once the tooth is filled, a permanent crown may be placed on top.

You may be given antibiotics to treat and prevent infection.

Why the Procedure Is Performed

A root canal is done if you have an infection that affects the nerve in the root of a tooth. Generally, there is pain and swelling in the area. The infection can be the result of a tooth crack, cavity, or injury.

A root canal can save your tooth. Without treatment, the tooth may become so damaged that it must be removed.

Risks

After the Procedure

You will need to see your dentist after the procedure to make sure the infection is gone. A dental x-ray may be taken. Regular dental checkups are necessary. For adults, this usually means a visit twice a year.

Outlook (Prognosis)

You may have some pain or soreness after the procedure. An over-the-counter anti-inflammatory drug, such as ibuprofen or naproxen, can help relieve discomfort.

Most people can return to their normal routine the next day. Until the tooth is permanently filled or covered with a crown, you should avoid rough chewing in the area.

References

Pogrel MA. Damage to the inferior alveolar nerve as the result of root canal therapy. J Am Dent Assoc. 2007;138(1):65-69.


Review Date: 2/22/2012
Reviewed By: Paul Fotek, DMD, Florida Institute for Periodontics & Dental lmplants, West Palm Beach, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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