A root canal is an endodontic treatment that consists of removing a tooth’s pulp that is either inflamed or infected. The tooth’s pulp is the soft center of the tooth under the hard enamel layer and softer middle layer called dentin. The pulp contains soft tissue such as blood vessels, nerves, and connective tissue.
When the pulp becomes inflamed or infected, a root canal is necessary to save the natural tooth. A tooth endodontically treated obtains its nutrients from the tissue that surrounds them, therefore, they can survive without the pulp.