Halitosis – the medical term for bad breath.
Hard Palate – the roof of the mouth.
Heat-Sterilizing – the use of an autoclave or dry-heat sterilizer to kill all potential disease-causing agents that remain on dental instruments following patient treatment.
Heterodont – different types of teeth within the same dentition (e.g., incisors, canines, molars, etc.).
Histo-Differentiation – development into a specialized tissue.
Histology – the study of tissues.
Homodont – the presence of only one type of tooth in the dentition.
Hygienist – dental hygienists are licensed medical professionals specializing in preventive oral health care.
Hyperplasia – the over-growth of a part or area; an increase in the number of cells.
Hypersensitivity – a sharp, sudden, painful reaction in teeth when exposed to hot, cold, chemical, mechanical, or osmotic (sweet or salty) stimuli.