Eating disorders are severe psychiatric illnesses associated with physical and psychological morbidity and mortality, and their incidence has increased, suggesting these conditions and their comorbidities as an issue of emerging importance in public health. Oral healthcare professionals may be among the first to observe the signs and symptoms of an eating disorder because of the recognizable and consistent links with oral pathology and it is important that they are sufficiently informed, and feel confident to diagnose and treat oral comorbidities The purpose of this review is to describe the oral impacts of Anorexia nervosa (AN) and Bulimia nervosa (BN) in the oral cavity, and to present a case related to one of this conditions.