[How I explore … a dento-maxillofacial dysmorphosis].

Dento-maxillofacial dysmorphoses represent a considerable area of maxillofacial surgery. Their incidence has constantly been on the rise since the beginning of the century. This can be explained by variations in the food and society habits.We will first discuss the various causes (congenital and environnemental) and the pathophysiology of these disorders. Then, we will separate them according to the skeletal and Angle's classifications. We will examine the predictive criteria of these dysmorphoses from the youngest age and consider their clinical and cephalometrical diagnosis. We will envisage their functional and aesthetic consequences and expose the preventive options. Finally, we will describe the orthodontic and surgical treatment available today and conclude that surgery remains the gold standard by restoring the conventional axis.