Dentinal Hypersensitivity
Pronunciation: DEN-tin-al hy-per-sen-si-TIV-ih-tee
A sharp, transient pain response originating from exposed dentinal tubules, triggered by thermal, tactile, osmotic, or chemical stimuli. It is a common chief complaint managed within dental hygiene practice.
Full Definition
Dentinal hypersensitivity occurs when the protective enamel or cementum covering dentin is compromised, exposing dentinal tubules to external stimuli. The hydrodynamic theory proposes that fluid movement within these tubules stimulates pulpal nerve fibers, producing pain. Clinically, it is distinguished from pulpal pathology by its short duration and the absence of spontaneous pain. Dental hygienists document triggering factors and apply desensitizing agents as part of treatment. Editors should note the preferred spelling 'dentinal' (adjectival form of 'dentin') and avoid the variant 'dentine hypersensitivity' in North American style guides.
Usage
Usage note: North American style favours 'dentin' over 'dentine'; use 'dentinal hypersensitivity' in formal clinical records. Do not shorten to 'sensitivity' alone in diagnostic statements.
In Context
- "The patient reported dentinal hypersensitivity to cold beverages on the facial surfaces of the mandibular anteriors." — Dental hygiene assessment note
- "A 5% potassium nitrate desensitizing paste was recommended to manage the patient's dentinal hypersensitivity." — Treatment plan document