Endodontists are dentists who specialize in saving teeth through different procedures which involve the pulp (nerve) and root of teeth.In the situation that a tooth is considered so threatened (because of decay, cracking, etc.) that future infection is considered likely or inevitable, a pulpectomy (removal of the pulp tissue) is advisable to prevent such infection.

Usually, some inflammation and/or infection is already present within or below the tooth. To cure the infection and save the tooth, the dentist drills into the pulp chamber and removes the infected pulp and then drills the nerve out of the root canal(s) with long needle-shaped hand instruments known as files (H files and K files). Starting with a smaller file size (sometimes termed a 'pathfinder'), progressively larger files are used to widen the canals. This process serves to remove debris and infected tissue and facilitates greater penetration of an irrigating solution After this is done, the dentist fills each of the root canals and the chamber with an inert material and seals up the opening. This procedure is known as Root Canal Treatment. With the removal of nerves and blood supply from the tooth, it is best that the tooth is fitted with a crown