Root canal therapy is needed when the nerve of a tooth is affected by decay or infection. In order to save the tooth, the pulp (the living tissue inside the tooth), nerves, bacteria, and any decay are removed and the resulting space is filled with special, medicated, dental materials, which restore the tooth to its full function.
Having a root canal done on a tooth is the treatment of choice to save a tooth that otherwise would die and have to be removed. Many patients believe that removing a tooth that has problems is the solution, but what is not realized is that extracting (pulling) a tooth may be more costly and cause significant problems for adjacent teeth.
An abscess (or pimple) on the gums.
Sensitivity to hot and cold.
Severe toothache pain.
Sometimes no symptoms are present.
Swelling and/or tenderness.
Decay has reached the tooth pulp (the living tissue inside the tooth).
Infections or abscesses have developed inside the tooth or at the root tip.
Injury or trauma to the tooth.