Dental implants require anesthesia. From a clinical point of view, doing surgery without anesthesia is very painful and intolerable to the patient. Of course, anesthesia is very simple, from the clinical point of view, oral anesthesia is generally divided into two kinds of anesthesia, one is block anesthesia, one is infiltration anesthesia. Simply speaking, block anesthesia is a kind of anesthesia that anesthetizes the nerves, which is relatively coarse. Infiltration anesthesia is wherever the surgery is done. In terms of implant surgery, generally speaking, the choice of infiltration anesthesia, that is, in which area of the surgery, in which area anesthesia. In terms of the injection process, because the needle is relatively thin, the pain of the operation is relatively mild, and then in the whole process of implantation if the patient has pain, but also additional anesthesia, so that the patient in the whole process of the operation without pain. At the same time, because the anesthetic injection is relatively small, the reaction time is about two and a half hours to three hours, after the anesthetic withdrawal, the patient in the first day after the operation to the second day will have a reaction, mainly pain. After 1-2 days of pain, the patient may experience localized swelling and edema, which will recover slowly. The advantage of infiltration anesthesia is that if the nerve is touched during the implant surgery, the effect of infiltration anesthesia is much lower than that of block anesthesia, and the patient will react and feel more pain, which will also indicate that the implant has been closer to the nerve, and attention should be paid to protect the nerve. Therefore, infiltration anesthesia is very common in implant surgery, less traumatic for the patient, and less reaction after surgery.