When a tooth becomes infected or inflamed there are only two options available. One is to extract the tooth and the other, more popular option, is to save the tooth using root canal therapy. Unfortunately, most people later regret extracting their tooth as replacing a missing tooth can be difficult and very costly.
Root canal therapy is the replacement of an infected or damaged nerve in a tooth with a special type of filling. The nerve (pulp) is found in the center of a tooth and extends into each root as far as the root tip. The procedure is also known as endodontic treatment.
In the past, diseased and damaged teeth were removed, but thanks to advancements in root canal therapy these teeth can now be saved.
What causes nerve damage?

• Deep decay
• Tooth fracture
• Trauma to a tooth
• Severe wear or tooth grinding
• Some types of gum disease

An inflamed nerve can cause sensitivity to hot or cold drinks and foods. An abscessed, or infected, nerve may make the tooth very sore to bite on and it may ache continually. Swelling may also be present.
The root canal treatment procedure in most cases is simple, straight forward and comfortable. The diseased, damaged or dead nerve tissue inside the tooth is removed. The space that remains is then cleaned, shaped, treated with medicaments and filled with a special filling material.