A root canal is the space within the root of a tooth that is filled with pulp tissue (nerves and blood supply). Root canal treatments are valuable dental procedures used to treat and preserve teeth with infected roots. In a situation that a tooth is badly decayed or cracked that involves the pulp tissue, a removal of the pulp tissue (root canal treatment) is performed in order to save the tooth. To do sothe dentist drills into the pulp chamber and removes the pulp tissue. After this is done, the dentist fills each of the root canals with an inert material (gutta percha) and seals up the opening. After completion of the rooth canal in most cases the tooth is fitted with a crown to increase its longavity.