When painkillers don’t work for pulpitis, it is recommended to cure the pulpitis through a root canal procedure, which can completely eliminate the pain in the affected tooth. The steps of root canal treatment are as follows. 1. Firstly, the pulp chamber is opened under local anesthesia to remove the infected material in the pulp chamber, at this time, the pressure in the pulp chamber is reduced and the pain can be relieved. 2. Afterwards, the root canal is prepared into a shape that is conducive to rinsing, sealing and filling, and after rinsing and sterilizing, the root canal is tightly sealed with root canal filling material, and the root canal treatment is completed. Afterwards, a suitable restoration is selected according to the size of the defect and the position of the affected tooth. It is recommended to go to the hospital in time, with the help of the doctor to carry out targeted treatment. If you have a toothache, you should go to the hospital in time, and the use of painkillers can only play a role in relieving the pain. Drugs should be used under the guidance of a doctor, do not take medication without authorization.