Dental question about observed-topic:tooth-sensitivity

Tooth sensitivity is a brief response to cold, sweet, touch, or air when dentine is exposed or tooth tissues are irritated.

Sensitivity occurs when exposed dentinal tubules transmit fluid movement toward the pulp. Recession, wear, erosion, cracks, decay, leaking restorations, or recent treatment can expose that pathway.

Sensitivity is a symptom, not a diagnosis. A product may reduce it while the underlying cause remains.

Use a soft brush, gentle pressure, and avoid repeated temperature testing or recent whitening exposure.

Seek care for lingering heat or cold pain, biting pain, a dark tooth, crack, or swelling.