During the doctors advise for surgery and complete removal of teeth. The following anesthetics are normally used before surgery or to alleviate the pain in general:
Local anesthetic - A local anesthetic is injected into the gums to numb the tongue, allowing for a painless surgical procedure.
Intravenous sedative - Until administering a local anesthetic, an intravenous sedative is normally administered through the arm. This causes the patient to become drowsy which prevents him from feeling any discomfort during the procedure.
General anesthetic - It is only injected after a highly complex and vital wisdom teeth operation to put the patient to sleep.