What Is Root Canal Treatment?
Inside every tooth, beneath the hard enamel and dentin, lies a soft tissue called the pulp, containing nerves, blood vessels, and connective tissue. When this pulp becomes infected, typically from deep decay, a crack, or repeated dental work on the same tooth, it causes significant pain and, if left untreated, can lead to abscess or tooth loss.
Root canal treatment removes the infected pulp, thoroughly cleans and disinfects the canals, and seals the tooth against future infection, a process the American Association of Endodontists describes in more clinical detail. The tooth is then restored, usually with a crown, so it looks and functions like it did before.