It’s necessary to have endodontic or root canal treatment when the inside of your tooth (the pulp) becomes inflamed or infected as a result of deep decay, repeated dental procedures, faulty crowns or a crack or chip in the tooth. Trauma to your tooth may also cause pulp damage even if the tooth has no visible chips or cracks. If pulp inflammation or infection is left untreated, in can cause pain or lead to an abscess.
When you undergo a root canal or other endodontic treatment, the inflamed or infected pulp is removed and the inside of the tooth is carefully cleaned and disinfected, then filled and sealed with a rubber-like material called gutta-percha. Afterwards, the tooth is restored with a crown or filling for protection and will continue to function like any other tooth.