How long does professional teeth whitening last
Professional whitening fades over time as new stains form, with duration influenced by diet, tobacco, hygiene, and shade.
The short answer
Whitening gels use peroxide chemistry to break down stain molecules within enamel and dentine. They do not change the colour of fillings, crowns, veneers, or other restorations, so mismatched shades may become more visible.
What is the direct answer?
What does this question mean?
Have decay, leaking fillings, gum inflammation, and significant sensitivity checked before whitening. Follow the prescribed gel concentration and wear time, avoid stain-heavy foods briefly after treatment if advised, and maintain regular cleaning.
What can you do next?
See a dentist for pain, gum burns, uneven colour, or sensitivity that persists after whitening. An examination is also important when one tooth darkens or staining does not respond.
Frequently asked questions
What is the main point to remember?
Whitening gels use peroxide chemistry to break down stain molecules within enamel and dentine. They do not change the colour of fillings, crowns, veneers, or other restorations, so mismatched shades may become more visible.
What should I know before treatment?
Have decay, leaking fillings, gum inflammation, and significant sensitivity checked before whitening. Follow the prescribed gel concentration and wear time, avoid stain-heavy foods briefly after treatment if advised, and maintain regular cleaning.