Severe injury or decay in a tooth may require root canal therapy. Root canal therapy involves clearing out the materials within the root canal, leaving a hollow cavity that is then cleaned, disinfected, and filled. It is frequently an alternative to tooth extraction, which can destabilize the jaw and allow the surrounding teeth to become crooked.

Prior to root canal therapy, individuals can experience pain while chewing or continuous pain as well as extreme sensitivity to temperature. Following the procedure, the tooth will be pain-free as the nerve has been removed.


Root canal therapy is typically required because of extensive infection in the tooth affecting the pulp at the very center. Cracks, cavities, and loose fillings can leave a tooth vulnerable to this kind of infection.

Root canal therapy will also be necessary if a tooth is damaged due to injury reaching the root.


There is some risk in root canal therapy that the infection may not be cleared entirely. At times, for instance, a tooth may have four roots rather than the typical three, and the fourth can sometimes be missed.

It is also possible for the filling to fall short of filling the entire canal, and the root may crack.

Fortunately, a root canal procedure can be repeated if necessary to remedy either of these complications.