Dislocation of the jaw is the loss of contact between the lower jaw or mandible and the temporal bone: it is called the dislocation
of the temporomandibular joint
. It is often due to trauma, but can also sometimes occur during a yawn or laugh. It can also be caused by ligament
weakness or congenital malformation. Following dislocation of the jaw, the mouth
cannot be closed, the chin advances, the patient is unable to talk and the opening and closing movements are difficult or impossible, as well as chewing and therefore eating. Dislocation of the jaw must be addressed quickly by a competent person, then immobilized.