Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : 'hapsburg jaw'; 'habsburg jaw';
Description : Mandibular prognathism is a dentofacial anomaly characterized by protrusion of the
mandible, with lower incisors often overlapping the upper incisors. The protruding
lower jaw is caused by a forward positioning of the mandible itself (summary by Stiles
and Luke, 1953).;