How long do teeth whitening strips last
Whitening strips remove some surface and internal stains, but the lightening fades as new stains build on enamel.
What is the direct answer?
Whitening strips remove some surface and internal stains, but the lightening fades as new stains build on enamel.
What does this question mean?
A strip carries a peroxide gel against the front enamel. The peroxide breaks down some stain molecules, while fillings, crowns, veneers, and dentine do not whiten in the same way.
What can you do next?
Follow the product instructions, keep the gel off the gums, and stop if marked sensitivity or gum irritation develops. A dentist can check for decay, exposed dentine, gum recession, and restorations before recommending whitening.
When should you seek dental care?
Seek dental advice before whitening if a tooth hurts, has a cavity, or has a cracked filling. Arrange a review if sensitivity persists after stopping or if the colour change is uneven.
What should you ask the dentist?
Ask whether the stains are on the enamel or within the tooth, whether existing restorations will match afterward, and which whitening method suits your sensitivity and gum health.
Frequently asked questions
Do whitening strips whiten fillings?
No. Tooth-coloured fillings and other restorations keep their existing shade, which can become more noticeable after natural teeth lighten.
What makes the result fade?
New stains from drinks, foods, tobacco, and plaque can reduce the visible effect over time.