Thanks for writing to us.
During accident,your jaws as well as teeth may have fractured or dislocated resulting in severe pain
I would advice you to get a thorough clinical evaluation by a dentist
If jaws are immobilised,splinting has to be done to replace them.
Avoid mouth opening too widely.
Antibiotics-analgesics has to be administered.
Meanwhile,also monitor whether neck,back or throat were inflammed or not.