Please call 911 immediately if you are having chest pain, difficulty breathing, severe bleeding, sudden weakness or numbness, or if you think you have a medical emergency.
Call 911 if: The person has a serious injury or is unconscious.
A knocked-out permanent tooth is a dental emergency. Knocked-out teeth can be re-implanted in many cases. A permanent tooth that is re-implanted within 30 minutes has the highest chance of success.
WebMD Medical Reference