The tiny canals contain the pulp of the tooth also commonly referred to as the nerve, which originates from the pulp chamber. Any trauma or infection of the nerve will result in the need for root canal therapy. Common reasons for root canal therapy include:
- Bacteria from the decayed tooth invades the pulp by penetrating through the tooth.
- Trauma, such as a chipped or broken tooth, occurs and results in the exposure of the nerve.
- A tooth has become abscessed — also known as infected — from decay.
- A tooth is slowly dying, due to aging or previous trauma that did not result in the need for treatment at the time of injury.