There are 3 steps to the procedure and a restoration/filling or crown is placed after the treatment is completed. Step 1. Removal of the nerve tissue, this is done under a rubber dam to protect the open tooth, it feels like having a restoration done where you will be given local anaesthetic for the procedure. Its complex treatment for the dentist, but for the patient, its not much of a difference then a standard restoration. Step 2. The canals are cleaned and shaped. They are also irrigated and at times if required, medicated is placed in the canals. Step 3. The canals are sealed with a special material so that it is filled and not allow for bacteria to located and reinfect it. Then a restoration is placed. For all 3 steps, local anaesthetic is given.