Professional teeth whitening sensitivity

Professional whitening sensitivity happens when peroxide temporarily reaches dentin pathways and irritates the tooth nerve or exposed root surfaces.

Whitening gels contain peroxide that breaks down stain molecules. Fluid movement in microscopic dentin tubules can stimulate the pulp, while exposed roots lack the full enamel covering of a crown.

Tell the clinician about sensitivity, cracks, cavities, erosion, recession, and recent dental work. The team may examine the teeth, protect gums, adjust exposure, space sessions, or use a desensitizing product.

Seek care for severe, persistent, localized, or spontaneous pain rather than continuing whitening. A painful tooth needs examination for decay, a crack, leakage, or pulpal inflammation.

Ask which teeth may react, how exposed roots will be managed, what desensitizer is suitable, and whether decay or gum disease should be treated first.