The causes of jaw cramps in yawning include the following.
1, the habit of clenching teeth in daily work or study can put the chewing muscles in a spastic and tonic state, and can cause soreness of the chewing muscles when yawning with a wide mouth.
2.Crowding, misalignment of teeth or the habit of side-chewing can trigger the temporomandibular joint dysfunction syndrome and produce unequal wear on both sides of the joint area, which can produce pain in front of the ear screen when yawning.
3.After being traumatized, perforation or rupture of the articular disc occurs, which prevents normal mouth opening and closing movements, and can produce pain in the joint when yawning.
4.When chronic inflammation occurs in the joint cavity and produces adhesions, excessive mouth-opening movements can induce joint motion disorders and produce local swelling and pain.