Severe Fracture
Usually, a severe fracture would mean that the tooth is traumatized and there is little chance of recovery.  Dental injuries include puncture wounds, tears and lacerations to the tongue, cheeks or lips.   In the event of an injury, have the wound cleaned, sutured and repaired.   If there is bleeding due to a tongue laceration, then try to pull the tongue forward and use guaze to put some pressure on it.