Crest 3d whitening professional effects
Whitening strips use peroxide to lighten natural tooth stains, with results shaped by the product, contact time and the original discoloration.
How do whitening strips lighten natural tooth stains?
Whitening strips use peroxide to lighten natural tooth stains, with results shaped by the product, contact time and the original discoloration.
How does peroxide gel work on the tooth surface?
The strip holds a peroxide gel against the front surfaces of teeth. The gel can break down some molecules responsible for discoloration, but it does not recolor fillings, crowns, veneers or other restorations.
How can you use whitening strips safely?
Read the product directions, keep gel away from the gums, and do not extend contact time to chase a faster result. Have a dentist check pain, cavities, gum recession, cracks or mismatched restorations before whitening.
When should you stop whitening and seek dental care?
Seek care before use if a tooth is painful or dark after trauma, and stop if intense sensitivity or gum burning develops. Uneven color after treatment may require assessment rather than repeated applications.
What type of tooth discolouration needs assessment?
Ask whether the discoloration is surface stain, internal tooth discoloration or a restoration mismatch. Ask whether a fitted tray or clinic whitening better controls gel contact for your teeth.
Frequently asked questions
Do strips whiten fillings?
No. They act on natural tooth structure, so fillings and crowns keep their existing shade.
Can strips touch the gums?
Gel contact should be limited according to the product directions because gum irritation can result.
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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.