Whether you need anesthesia for root canal treatment is related to your specific condition. If the nerve is already necrotic, you don’t need anesthesia; if the nerve is not completely necrotic or you are sensitive to pain, you need anesthesia. 1. No anesthetic: If the nerve is completely necrotic as a result of chronic apical periodontitis, no anesthetic can be used when cleaning the necrotic material and pulp tissue in the root canal, because there will be no pain when opening the pulp. 2. Need anesthesia: If the pulp inflammation is caused by acute pulpitis and other diseases, it will be accompanied by severe pain, sensitivity and other symptoms, which need to be treated with local anesthesia before root canal treatment. At the same time their own more sensitive to pain, that is also an option for anesthesia, can to a certain extent to relieve the tension. It is recommended to do root canal treatment before the tooth for a detailed examination, according to the doctor’s advice to choose the appropriate treatment, so as not to delay the condition.