Is getting your teeth professionally whitened bad

Professional whitening is a controlled peroxide treatment, but it can irritate teeth or gums and should wait until some problems are treated.

Peroxide breaks down coloured molecules in enamel and dentine; examination distinguishes stain from decay, cracks, or restorations.

Sensitivity and gum irritation depend on gel exposure, exposed dentine, enamel defects, and gum health.

Have decay and gum inflammation assessed, follow the prescribed protocol, and stop for burning or severe pain.

Seek care for persistent sensitivity, gum burns, severe pain, or a dark painful tooth.

Ask what causes the colour, whether restorations will change, and how sensitivity is managed.