One of the most troubling dental emergencies that require immediate attention is when a tooth is knocked out or dislodged. If a tooth is knocked out, you need to first apply gauze or a towel to the bleeding socket.Light pressure will help the bleeding stop. Next, you need to find the knocked-out tooth. Pick it up by the crown and then rinse it off. Place your knocked-out tooth in a cup of milk, saliva or saltwater to prevent it from drying out. Your tooth needs to be replaced back in your mouth as soon as possible for successful re-integration. After 30 minutes it becomes less likely the knocked out tooth can be “saved.”