When the nerve of your tooth becomes infected, a successful root canal treatment lets you keep the tooth rather than having to pull it out. Keeping your tooth helps to prevent your other teeth from drifting out of line and causing jaw
problems. Saving a natural tooth avoids having to replace it with an artificial tooth.
Root canal treatment, also known as endodontic treatment, is the process of removing infected, injured or dead pulp from your tooth. The space inside the hard layers of each tooth is called the root canal system. This system is filled
with soft dental pulp made up of nerves and blood vessels that help your tooth grow and develop.
When bacteria (germs) enter your tooth through deep cavities, cracks or flawed fillings, your tooth can become abscessed. An abscessed tooth is a tooth with an infection in the pulp. If pulp becomes infected, it needs to be removed. An abscessed tooth may cause pain and/or swelling. Your dentist may notice the infection from a dental x-ray or from other changes with the tooth. If left untreated, an abscessed
tooth can cause serious oral health problems.
An abcessed tooth
1. You receive a local anesthetic (freezing).
2. To protect your tooth from bacteria in your saliva during the treatment, a rubber dam may be placed around the tooth being treated.
3. An opening in the tooth will be created, to reach the root canal system and the damaged pulp.
4. Using very fine dental instruments, the pulp is removed by cleaning and enlarging the root canal system.
5. After the canal has been cleaned, the dentist the root canals are filled and sealed.
6. The opening of the tooth is then sealed with either a temporary or permanent filling.
The damaged pulp is removed
The root canals are filled and sealed
After a root canal treatment, your tooth has to be restored (fixed) to look, feel and work as much like a natural tooth as possible.
A permanent filling or a crown may be used to restore your tooth. The choice of restoration will depend on the strength of the part of the tooth that's left. A back tooth will likely need a crown because chewing puts a great deal of force on back teeth. If there is not enough of the tooth left, posts may be used to help support the crown.
The tooth is prepared for a crown.
Posts are used to help support the crown.
The crown is cemented into place.
Root canal treatment may be done in 1 or 2 appointments.
After a root canal treatment, your tooth may be tender for the first week or two. Bad pain or swelling are NOT common. If this happens, call your dentist or endodontist immediately.
You can still get a cavity or gum disease after a root canal treatment. Root canal treatment does not protect your tooth from other types of damage. With proper care and regular dental visits, the tooth could last as long as your other teeth. Most of the time, a tooth that has had
a root canal treatment can be saved. However, there are cases where everything possible has been done to save a tooth and still the tooth must be extracted (pulled).
Most root canal treatments are successful. But in some rare cases, a second root canal treatment is needed. This is called retreatment. When retreating a tooth, the root canal filling material is taken out, and the canal is recleaned,
reshaped and refilled.
Sometimes root canal surgery is needed when a regular root canal treatment cannot be done or when it has not worked. Surgery is done to:
- Check the end of the root for fractures (cracks).
- Remove parts of the root that could not be cleaned during regular root canal treatment.
- Clear up an infection that did not heal after regular treatment.