Dental A to Z ABCDEFGHIJKLMNOPQRSTUVWXYZ Also in H: HaemangiomaHalitosisHerpesHolistic DentistryHydrophilicHydrophobicHygienistHygroscopicHyoidHypersensitiveHyperventilationHypocalcificationHypodontia HyoidA horseshoe shaped bone that lies between the thyroid cartilage and the base of the tongue.back