Find the tooth and hold it by the crown. Try not to hold the root. If the tooth did not fall on the floor and did not get soiled, rinse under room temperature water. Do not attempt to rub or clean the tooth by any other means.
If it is a permanent tooth, you may try to reinsert the tooth back into its original position in the socket and have your child hold it in place with a clean cloth. If it is a baby or primary tooth, do not reinsert the tooth. If you cannot reinsert the permanent tooth, transport the tooth in a cup of milk, saliva, or water along with your child to a dentist immediately. Time is critical in trying to save the tooth. If this occurs late at night and you are unable to reach your dentist, follow the same instructions but go to your local hospital immediately.