Pain can occur in any number of places in your mouth: teeth, gums, roots, the palate (roof of the mouth), tongue and jaw.
Cavities are a common culprit causing pain. Untreated cavities can irritate nerves because of infections of the tooth and gums. Impacted and abscessed teeth and sore jaws from teeth grinding are other common causes of pain. Improper bite relationships and jaw disorders can also cause pain.
Special removable plastic mouthguards can sometimes be applied to stabilize a bite. Bites can also be corrected with special orthodontic procedures, appliances and restoration techniques.