Dental malocclusion Anterior open-bite malocclusion HP:0009102 Anterior open bite is a malocclusion characterized by a gap between the anterior teeth (incisors), that is, by a deficiency in the normal vertical overlap between antagonist incisal edges when the posterior teeth are in occlusion. Anterior openbite HP:0200095 Apertognathia malocclusion Anterior open bite Gap between upper and lower front teeth when biting Anterior open bite between upper and lower teeth AOB Absence of overlap of anterior upper and lower teeth UMLS:C4024598 Open bite