For a knocked-out permanent or adult tooth, keep it moist at all times. If you can, try placing the tooth back in the socket without touching the root. If that's not possible, place it in between your cheek and gums, in milk, or use a tooth preservation product that has the ADA Seal of Acceptance. Then, get to your dentist's office right away.
For your convenience, all of our dentists are available after hours during an emergency. This helps ensure that you will receive excellent care from your dentist any time an emergency strikes!
Info from mouthhealthy.org