Bilateral dislocation of the mandible. 2 cases in a nuclear family.

Two cases of bilateral dislocation occurred in two brothers, aged 20 and 23 within a period of seventeen months. The junior one was the first victim in the month of April 1999 and the senior brother later in November 2000. The first was triggered by yawning whereas the second by vomiting. Different types of dislocation, diagnosis and management of dislocation is presented. The occurrence in two siblings raises the question of familial predisposition to dislocation.