Teeth to kill the nerve sealing medicine is generally used in the pulp inactivator, under normal circumstances there will be slight pain, if the pain is serious for the abnormal situation, you need to go to the hospital in a timely manner to deal with. 1. General kill the nerve when the use of pulp inactivator will act on the pulp, so that the pulp tissue degeneration and necrosis, the role of the process will have a slight pain, is a normal phenomenon. 2. If the pain persists or intensifies during the action of the drug, it may be that the body is too sensitive to the drug or the pressure in the pulp cavity of the tooth is too great to cause the pain, which is abnormal, and it is necessary to go to the hospital for replacement of the drug and other treatments. Teeth to kill the nerve sealing drug period, if the pain is intolerable, it is recommended to go to the hospital in time to deal with.