Call your doctor or dentist immediately if you suffer a blow to your jaw, and you have any of the following symptoms:
Your jaw is deformed, crooked or shifted out of its normal midline position.
You have a painful lump in your jaw or below your ear.
Your teeth don't fit together properly or your bite is "off".
You have missing or loose teeth.
There is a painful swelling or a bruised area in the gum covering your jawbone.
You have difficulty opening your mouth or have pain in your jaw joint.
Your chin and lower lip are numb.