Crest 3d white strips classic white before and after
Classic whitening strips can lighten some surface and internal stains, but the visible result depends on enamel, stain type, fit, and use.
The short answer
Classic whitening strips can lighten some surface and internal stains, but the visible result depends on enamel, stain type, fit, and use. They cannot change the colour of fillings, crowns, veneers, or bonding.
How does whitening gel work on the front enamel?
The strip carries a peroxide-based whitening gel against the front enamel. Before-and-after photos can differ because of lighting, dehydration, camera settings, starting shade, and whether the stain is on the surface or inside the tooth.
How can you use Classic White strips safely?
Follow the product directions, keep gel off the gums, and stop if significant sensitivity or gum irritation develops. A dental cleaning can remove calculus and surface deposits first, while a dentist can assess cavities, cracks, exposed root surfaces, and restorations.
When should teeth be checked before using whitening strips?
Seek an examination before whitening if you have toothache, untreated decay, gum disease, cracks, or one dark tooth. Contact a dentist if sensitivity persists after stopping or if the gel repeatedly burns the gums.
What whitening result is realistic for your teeth?
Ask whether the discolouration is suitable for peroxide whitening and what shade change is realistic for your teeth. Ask how to protect sensitive areas and how existing restorations will be matched afterward.
Frequently asked questions
Why might the result look different in photographs?
Lighting, dehydration, exposure, and the starting shade can make photographs appear different.
Can strips remove a brown spot on one tooth?
A single spot may be decay, trauma, or a restoration, so it should be diagnosed before whitening.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.