There is no fixed time after drilling the nerve, mostly 2~5 days, after drilling the nerve to take good care of work, drilling the nerve pain is severe need to consult a doctor in time. Nerve drilling is used in clinical dentistry for endodontitis, apical periodontitis and other diseases treatment, drilling the nerve of the tooth when the local use of anesthesia, and there will be no pain. After the anesthesia recedes, there will be pain in the affected area of the drilled nerve, and the duration of the pain is not fixed, mostly for 2-5 days, determined by the patient’s daily care, physical fitness and other aspects. After drilling the dental nerve, patients should pay attention to oral hygiene, temporarily do not brush teeth in the affected area, chewing with the affected area, temporarily do not eat cold, hot, spicy and stimulating type of food, can not eat too hard food. When the pain is severe after drilling the nerve, you can take oral ibuprofen and other drugs to relieve pain. The medication should be directed by a doctor. Observe whether the pain symptoms are slowly relieved after drilling the nerve, if the pain symptoms are still serious a few days after drilling the nerve, you need to go back to the hospital for review in time.