Stop bleeding be pressing a moist swop on the wound. Also cool from the outside.
Search for fractured tooth parts or dislocated teeth.
If tooth fragments exist, bring them with you. They might be re-attached.
For a tooth it's best to stay in it's own socket. If a tooth is dislocated re-position it in it's socket. Grab the tooth at it's crown, do not touch the root surface. Do not clean the tooth surface extensively, only rinse ist gently. Do not store the tooth dryly! Beside it's own socket it's best to store the tooh in a tooth-salvation- box.
Bring your Vaccines Record Card.
Visit your dentist or the dental emergency service immediatly.