A root canal is actually the normal dental caries within the facility of the tooth which is full of the soft pulp cells as well as sensory nerves. When this root pulp is infected or inflamed, the root canal therapy is encouraged. This therapy helps save the tooth from removal and also protect against the infection from spreading to the healthy and balanced cells around the infected tooth, that might in some cases cause development of an abscess. Disregarding the infected tooth can spread out the swelling to the face, neck or head. It also impacts the bone around the root tip. zahnnerv ziehen ablauf