Yes, knocked-out teeth can be repaired, and the sooner you can get to your dentist's office, the better. Knocked-out teeth with the highest chances of being saved are those seen by the dentist and returned to their socket within one hour of being knocked out. If a tooth has been knocked out, gently rinse any debris from the root and attempt to place it back into the socket. If that’s not possible, hold it in the mouth on the way to the dentist. If all else fails, keep the tooth in milk until you get to the dentist's office.