Bleeding after a tooth extraction should not usually be stopped with iodophor cotton balls. It may affect wound healing. You can use cotton balls to stop bleeding after tooth extraction, but it is best not to apply iodophor, which is a kind of topical medicine, and it is best not to enter the mouth, so as not to cause the body to be irritated. If you want to stop bleeding after tooth extraction, you can bite a sterile cotton ball with your teeth, and usually bleeding symptoms can be effectively relieved by pressing to stop bleeding. Bleeding time after tooth extraction is generally not too long, clenching 30 to 40 minutes can generally stop bleeding, blood in the mouth and a small amount of oozing blood is normal, as long as it is not a large mouth of blood do not have to worry too much. After the extraction of teeth need to pay attention to personal oral hygiene, to keep the mouth clean, within 24 hours, it is best not to brush the teeth and rinse mouth.