There are more precautions after the removal of the residual root, as follows: 1. Thoroughly stop bleeding, after the doctor extracts the residual root, the patient will bite the cotton ball at the extraction site, and is required to bite the cotton ball for more than 30 minutes and spit it out, and is required not to brush the teeth or rinse the mouth for 24 hours, and not to use the tongue to suck or lick the wound to prevent bleeding; 2. For patients with bleeding tendency, they are generally required to observe in the hospital for 30 minutes, and the patient If it is found that the wound is still bleeding after going home, in this case, you can go to the pharmacy to buy gauze, bite directly to the bleeding site, bite for 30 minutes and then observe again, if there is still bleeding after removing the gauze, you should go to the hospital for follow-up in time; 4. usually in about 3 months, it is necessary to go to the hospital for follow-up, and in this case, denture restoration should be carried out.