Use the American Dental Association's Find A Dentist tool or another dentist locator, such as Dentistry.com, to search for an emergency dentist. If your normal dentist's office is open, call them first to see if they can provide the treatment you need.
If you are in severe pain and cannot find an emergency dentist, you can visit a hospital emergency room. Some may have dentists on staff that can treat you, while others may simply provide pain medication and suggest you see your regular dentist. Dental schools sometimes offer 24-hour emergency clinics, if there is a school in your area. University teaching hospitals may also be good sources of emergency dental care.
While you are looking for a dentist and waiting for your appointment, take proper care of your dental injury. If you knocked out or broke a tooth, try to locate the broken piece and keep it moist. Hold it in your mouth if you can safely do so, or put it in milk. For cracked teeth or toothaches, use warm water to rinse your mouth and a cold compress to minimize pain and swelling. For more serious emergencies, such as a broken jaw, go to the hospital emergency room immediately. Most dental clinics cannot handle such severe injuries.