After tooth extraction, you can use ice packs to apply cold compresses to the corresponding parts of the face after tooth extraction. After the extraction of teeth, especially wisdom teeth, there will be bleeding, swelling, pain and other post-reactions, in addition to the use of antibiotics to control infection, pain relief to reduce pain, can also be localized cold compresses to reduce the symptoms of postoperative reactions. The use of ice packs in the corresponding face of the extraction of teeth, cold compresses can shrink the local blood vessels, reduce local bleeding, has a certain hemostatic function. In addition, the local cold compress can also reduce the local trauma of tissue fluid exudation, thereby reducing the local swelling, to a certain extent, to relieve pain. Local cold compress after tooth extraction, it is recommended that within 24 hours, in order to reduce the excessive contraction of the de-unlearning country, in order to avoid the formation of localized frostbite, it is generally recommended to intermittent cold compress after anesthesia. Any discomfort after tooth extraction requires prompt medical attention to avoid adverse effects.