My tooth extraction blood clot failed, what to do?

Gauze, pressure: Failed? Do you mean it is still bleeding? Use a dry sterile gauze or a wet tea bag over the socket and held in place with gentle pressure for 45 minutes. If you still have any concerns or problems, call the dentist who extracted the tooth.

Dry socket: What so you mean your clot failed? If you are having severe pain you may have a dry socket, where you lost the healing clot. Call the extracting dentist for treatment asap. This can be very painful until you get treatment.

Call your dentist: in General if you keep pressure on the area in question you should stop the bleeding. If you eat and rinse your mouth before a proper clot formation, you can start bleeding again, in this case reapply pressure with a gauze or best use a tea bag and bite on it for 15 minutes, it should help. Other wise call your dentist.