The dentist will need to numb the tooth that requires the root canal; they will then isolate the area with a rubber dam to protect the surrounding tissue from the medications needed to clean inside the tooth.
The dentist will use a series of instruments and medications to clean the canals and will then fill the canals with a plastic like material. Once the root canal is completed the tooth will require a filling or crown to close the tooth. In most cases crowns are recommended as teeth become brittle and are prone to breaking once root canal therapy is completed.