Dental A to Z ABCDEFGHIJKLMNOPQRSTUVWXYZ Also in H: HaemangiomaHalitosisHerpesHolistic DentistryHydrophilicHydrophobicHygienistHygroscopicHyoidHypersensitiveHyperventilationHypocalcificationHypodontia HyperventilationBreathing at an abnormally high rate which can induce unconsciousness.back