Root canal therapy consists of removal of the pulp tissue contained within the tubular root canals, and sealing them with an inert material to eliminate bacterial infection.

Degeneration of the dental nerve is the primary reason for root canal treatment. It is most frequently caused by untreated bacterial decay that destroys the enamel and dentin and infects the pulp tissue.

A sharp blow to the tooth can also precipitate nerve failure, sometimes years after the initial trauma.

Nerves can...