Wisdom teeth extraction smooth may take about 10 to 30 minutes, complex teeth generally need about 2 to 4 hours, including anesthesia, extraction of the affected tooth, hemostasis and other processes, it is recommended to the regular hospital extraction. Conventional wisdom teeth can be extracted by local infiltration anesthesia, generally 2 to 5 minutes to take effect, the extraction of smooth 2 to 5 minutes to remove, placed on the hemostatic cotton ball to stop bleeding can be completed. Obstructed teeth may need to block anesthesia, the effect of the drug is usually 3 to 8 minutes to take effect, sometimes also need to assist local anesthesia. Cutting the gums to stop bleeding, and then removing the crown resistance to extract the affected tooth usually takes about 10 to 20 minutes, and then suture compression to stop bleeding takes about 3 to 5 minutes to complete. Ambulatory blockage of the affected teeth and the need to do root splitting, the time is relatively longer, this is an individual case, usually takes 2 to 4 hours.