What is Root Canal Therapy?

What is Root Canal Therapy?

6th October 2015 - 8:30 pm
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Underneath your tooth’s outer enamel and within the dentin is an area of soft tissue called the pulp, which carries the tooth’s nerves, veins, arteries and lymph vessels. Root canals are very small, thin divisions that branch off from the top pulp chamber down to the tip of the root. A tooth has at least one but no more than four root canals.

Why do I feel pain?
When the pulp becomes infected due to a deep cavity or fracture that allows bacteria to seep in, or injury due to trauma, it can die. Damaged or dead pulp causes increased blood flow and cellular activity, and pressure cannot be relieved from inside the tooth. Pain in the tooth is commonly felt when biting down, chewing on it and applying hot or cold foods and drinks.

Why do I need root canal therapy?
Because the tooth will not heal by itself. Without treatment, the infection will spread, bone around the tooth will begin to degenerate. Pain usually worsens until one is forced to seek emergency dental attention. The only alternative is usually extraction of the tooth, which can cause surrounding teeth to shift crookedly, resulting in a bad bite. Though an extraction is cheaper, the space left behind will require an implant or a bridge, which can be more expensive than root canal therapy. If you have the choice, it’s always best to keep your original teeth.

What is a root canal procedure?
A root canal is a procedure done to save the tooth by cleaning out the diseased pulp and reshaping the canal. The canal is filled with gutta percha, a rubberlike material, to prevent recontamination of the tooth. The tooth is then permanently sealed with a metal or porcelain crown. This enables patients to keep the original tooth.

What is involved in root canal therapy?
Once your general dentist performs tests on the tooth and recommends therapy, he or she can perform the treatment or refer you to an endo-dontist (a pulp specialist).Treatment usually involves one to three appointments.

First, you will probably be given a local anesthetic to numb the area. Next, a gap is drilled from the crown into the pulp chamber, which, along with any infected root canal, is cleaned of all diseased pulp and reshaped. Medication may be inserted into the area to fight bacteria.
Depending on the condition of the tooth, the crown may then be sealed temporarily to guard against recontamination, or the tooth may be left open to drain, or the dentist may go right ahead and fill the canals.

If you’re given a temporary filling, usually on the next visit it’s removed and the pulp chamber and canal (s) are filled with rubber like gutta percha or another material to prevent recontamination. Once filled, the area is permanently sealed. Finally, a crown is normally placed over the tooth to strengthen its structure and improve appearance.

What are the risks and complications?
More than 70 percent of root canal treatments are successful. However, sometimes a case needs to be redone due to diseased canal offshoots that went unnoticed. Any tooth may have more than one canal, which may be missed while performing the root canal. Sometimes the canal may be unusually shaped, making it impossible to fill it completely, so that some infected material is still left in the canal. Sometimes the canal filling does not extend deeply enough into the canal, or it does not fill the canal as much as it should. Sometimes a tooth root may be perforated while the root canal is being performed, making it difficult to fill the tooth. Occasionally, a root canal therapy will fail altogether, marked by a return of pain.
Claims have been made that it is impossible to fully sterilize a tooth internally, or fill it in a perfectly inert biocompatible permanent fashion. There is an ongoing risk of infection, which may pose dangers to the rest of the body. Unfortunately, there is generally no satisfactory alternative. Pulling the tooth leaves a gap which poses both aesthetic and functional problems, and endangers the structure of the adjacent teeth.
What happens after treatment?
Natural tissue inflammation may cause discomfort or pain for few days, which can be controlled by an over-the-counter analgesic. A follow-up exam can monitor tissue healing. From this point on, brush and floss regularly, avoid chewing hard foods on the treated tooth, and see your dentist regularly.

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