Learn About - Tooth Cavity

Root Canals: Everything You Ever Wanted to Know

Why are root canals done?

Root canal therapy is required when the nerve of the tooth becomes irreversibly damaged. This damage can occur from decay, trauma, or a crack in the tooth.

What is a common root canal symptom?

Pain, swelling, and sensitivity to hot or cold. Another indication of nerve damage is the tooth becoming darker in color. Sometimes, it can only be diagnosed with an x-ray or other tests by an endodontist.

What is done during a root canal procedure?

The purpose of root canal therapy is to clean out the infected tooth pulp tissue within the roots. After all the nerve has been removed, the canals are filled with a sealer.

How long will the procedure take?

Generally, root canals take one or two appointments for a front tooth (anterior), and two or three appointments for a back tooth (posterior). A tooth can have from one to four roots; all of the roots must be treated. Difficult cases may require even more visits.

Will the tooth need any more work after the treatment is finished?

Yes, the tooth will require a permanent restoration. This could range from a simple filling to a large build-up with posts and pins. The tooth is more brittle after a root canal treatment and therefore is more susceptible to fracture. If the filling is large, the tooth may need a crown as well. A crown protects the tooth from breaking.

Isn't it simpler to take out the tooth?

It may seem simpler to have the damaged tooth removed; however, it is really much healthier and more economical to save it. If the extracted tooth is not replaced, the teeth next to it can drift into the empty space. Replacing an extracted tooth involves either expensive bridgework or a partial denture.

Will the root canal procedure hurt?

During the actual treatment, your tooth will be numb as it would be for simply filling a cavity. The treatment is usually started because the tooth is sensitive; it may take a day or two for the tooth to get back to normal. Generally a mild painkiller is enough to keep you comfortable during this time. If something stronger is needed, your endodontist will prescribe it. If the tooth is badly infected, an antibiotic may be needed as well.

How much will it cost?

The cost of root canal treatment and therapy varies with the number of canals which need to be treated. There will be a separate charge for the restoration, depending on the extent of the procedure. Your dentist will be glad to discuss the charges with you for all the expected treatment.

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.

A Root Canal Abscess

What Causes an Endodontic Abscess?

An endodontic abscess is caused by infected pulpal tissue. This acute disease process then spreads to the outside of the root and enters the bone and soft tissues around the tooth. An endodontic abscess is oftentimes accompanied by a cascade of symptoms. These symptoms may include:

• Pain to hot liquids, touch, or biting pressure.
• Pressure that partially pushes the tooth out of the socket, causing it to contact the opposing tooth first upon biting.
• A loose tooth resulting from infection and subsequent pressure that builds around the outside of the tooth.
• Swelling localized to the tissue around the tooth.
• Swelling that spreads from the gums around the tooth into the cheek, lips, or neck areas. These tissues can become swollen resulting in an exaggerated asymmetry of the face.

In cases of extreme dental infection, the eye can become swollen shut or breathing can become difficult as pressure builds against vital structures. In these instances of severe infection, hospitalization may become necessary.

What Is Involved in the Emergency Management of an Abscessed Tooth?

An endodontic abscess can be extremely painful and emergency treatment is directed towards promptly relieving the patient's pain and, if present, reducing the swelling as quickly as possible. Emergency management would usually include getting the area profoundly numb and then creating a small window through the biting surface of the tooth and into the pulpal space. By opening the tooth in this manner, the dentist can relieve the pressure that has built up inside the tooth and allow the infected area to drain. Usually, the only procedures that are performed at the emergency visit are the ones that are necessary to eliminate acute pain and control the infection. Subsequent care an endodontic abscess will be necessary when the patient is more comfortable and relaxed in order to properly complete root canal treatment. At the conclusion of the emergency visit, the patient may require medications for pain and/or infection control and these will be prescribed by the doctor if they are necessary.

By Clifford J. Ruddle, DDS, in collaboration with Philip M. Smith, DDS

+Jim Du Molin is a leading Internet search expert helping individuals and families connect with the right dentist in their area. Visit his author page.