If the blood or nerve supply of the tooth is infected through decay or injury, then you will need root canal treatment.
When the soft tissue inside the tooth becomes infected, then can be spread and lead to dental abscess.
The aim of the treatment is to remove all infection. The root is then cleaned and filled with appropriate material so that to prevent from any further infection.
The whole procedure is carried out by an endodontist dentist being qualified for this kind of treatments.
The whole procedure is completed with accuracy and efficacy by the specialist in one visit, most of the time.
Microscope is available in case is needed.