Dental stumps in the elderly need to be extracted in most cases, due to several adverse effects of stumps kept in the oral cavity for a long time. Specifically, the following: 1. The root tips of the residual roots are often infected, and patients will show repeated swelling and pain in the gums, which may lead to jaw cysts in the long run; 2. The edges of the residual roots are often sharp, and in the oral cavity, due to the movement of the mucous membrane and the tongue, they often lead to ulcers and, in serious cases, cancer; 3. If the residual roots are not extracted and the dentures are restored directly, because after the dentures are restored, oral cleaning becomes In this case, the swelling and pain of the gums around the residual root will often occur, and the dentures will not be used normally. Therefore, in most cases, patients are advised to have the root extracted. Of course, there are some special cases where some elderly people cannot have their teeth extracted due to systemic health factors, such as high blood pressure, diabetes, heart disease, malignant tumors, etc. In these cases, it is recommended that the patient have his teeth extracted in order to provide him with the necessary treatment. In these cases, in order to restore the patient’s denture, a thorough root canal treatment will be performed to control the infection and then save it for restoration.