- Rinse your mouth with a mild salt-water solution.
- Use a moistened piece of gauze or tea bag to apply pressure to the bleeding site. Hold in place for 15 to 20 minutes.
- To both control bleeding and relieve pain, hold a cold compress to the outside of the mouth or cheek in the affected area for 5 to 10 minutes.
- If the bleeding doesn't stop, see your dentist right away or go to a hospital emergency room. Continue to apply pressure on the bleeding site with the gauze until you can be seen and treated.
Source : WebMD Medical Reference