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Endodontics: What Happens at a Root Canal Appointment?

At the root canal treatment appointment, whether it is an emergency visit or a regularly scheduled visit, the patient will be cared for by various members of a trained and professional team. A primary goal of the dental team is to make certain that the patient is comfortable physically and emotionally during every stage of treatment. In addition to relieving tooth pain, if present, the goals of endodontic treatment are to eliminate endodontic disease and move the patient towards a state of health. With modern endodontic techniques, these goals can generally be achieved. Root canal treatment may take one or more visits to complete and usually progresses through the following stages:

1. The dentist reviews the findings and recommendations from the examination and consultation visit. If any additional radiographs are needed before starting treatment, they may be taken at this time.
2. The patient is typically given a local anesthetic. With newer techniques and devices, these anesthetics can usually be administered painlessly. The tooth can be made "profoundly" numb so that the patient is completely comfortable during treatment.
3. After achieving the required level of anesthesia, the dentist "isolates" the tooth using a "dental dam." This is a sheet of rubber material that fits over the tooth to be treated and forms a tight seal around it. The rubber dam serves to keep the saliva away from the area being treated and it also prevents the various disinfecting and cleaning solutions used during the procedure within the tooth from entering the mouth.
4. After the tooth has been isolated, the dentist prepares a window (an "access" opening) through the biting surface of the tooth in order to gain access into the diseased root canal space.
5. Once the access preparation is complete, the dentist begins to "clean" the root canal space by removing the diseased pulp tissue, bacteria, and related irritants. This is done using special solutions and small flexible instruments, called "files." The solutions penetrate and clean areas of the canal where the instruments cannot physically reach.
6. As the root canal system is being cleaned, it is also being "shaped." Shaping is the process of enlarging the root canal space in such a way that it can be thoroughly cleaned and subsequently filled and sealed. A root canal space that is not properly shaped may still harbor bacteria.
7. Following cleaning and shaping procedures, the root canal space is ideally filled and sealed in all its dimensions by a dentist. This is most commonly accomplished using a sealing cement in combination with a unique material called "gutta percha." Gutta percha is a special material that can be softened with heat and then pressure molded to precisely fill the root canal space.
8. Once the tooth is three-dimensionally sealed, it is generally "provisionalized" (temporarily restored) until a more long-lasting protective restoration can be placed. A protective restoration helps minimize the chances of future tooth fracture.

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

Root Canal Dentist, Tooth Pain and Endodontic Disease

What Are the Most Common Symptoms of Endodontic Disease?

Endodontic disease can manifest itself with a wide variety and combination of symptoms. Common symptoms of endodontic disease include:

• Lingering tooth sensitivity to cold liquids.
• Lingering tooth sensitivity to hot liquids.
• Tooth sensitivity to sweets.
• Tooth pain to biting pressure.
• Tooth pain that is referred from a tooth to another area, such as the neck, temple, or the ear.
• Spontaneous toothache, such as that experienced while reading a magazine, watching television, etc.
• Constant or intermittent tooth pain.
• Severe tooth pain.
• Throbbing tooth pain.
• Tooth pain that may occur in response to atmospheric pressure changes, such as when flying or scuba diving.
• Tooth pain that may occur in response to postural changes, such as when going from a standing to a reclining position.
• Tooth Swelling.

If you have any of these symptoms, it would be wise to see your dentist because you might have root canal disease or another dental problem.

Some of these endodontic disease symptoms may also be attributable to decay, defective fillings, periodontal diseases, cracked teeth, or other tooth or bite-related problems.

On other occasions, the symptoms may even be caused by disorders that are not related to the teeth.

Why May Endodontic Disease Cause Swelling?

When the pulpal tissue becomes severely diseased and necrotic, the resultant infection can spread from inside the tooth into the adjacent bone and soft tissues. As a result, swelling can occur in the tissues immediately surrounding the tooth.

If this situation is not treated and the endodontic disease process is not kept under control by the body's defenses, the infection can begin to spread into other tissue spaces, such as those around the eye or in the neck. In some situations, this can become a serious medical emergency.

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

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