Losing a permanent, adult tooth is serious, but if you act quickly enough, your dentist may be able to save the tooth and reroot it.
If your tooth looks clean, you should gently place it back in its socket. However, if you can’t return your tooth to its socket, or you are concerned you may swallow it, you should place your tooth in a small container of cold milk and then call your dentist. The calcium in the milk can help preserve your tooth until your dentist can reroot it.
If your dentist can get the tooth back into its socket within 10 minutes of it falling out, it should be able to take root again on its own. However, each passing minute makes it less likely that your tooth can be salvaged. Teeth that have been out of their sockets for 2 or more hours are rarely salvageable.
Even if your tooth is unlikely to be saved, it’s still vital that you see your dentist as soon as possible. Your tooth’s socket will need to be thoroughly inspected and cleaned to avoid infection and other complications.