Once a dentist has established if the patient will require root canal therapy, the procedure date will be scheduled. To begin, the dentist will use local anesthesia to numb the area. Next, a rubber dam is used to keep the tooth dry and free from saliva. An access hole is then drilled into the top of the tooth to allow pulp, bacteria and debris extraction. During the cleaning process, a series of root canal files are inserted into the access for scrubbing and scraping purposes. Lastly, a filler is used to fill the exterior access hole created during treatment. A sealer paste and rubber compound is inserted inside the tooth root canal. Depending on the extensity of the damage, the tooth may require further restoration i.e. a dental crown.