Crest 20 day whitening strips
Whitening strips use peroxide gel against the tooth surface over repeated applications, with results depending on the starting shade and stain type.
How do repeated whitening strip applications affect teeth?
Whitening strips use peroxide gel against the tooth surface over repeated applications, with results depending on the starting shade and stain type.
How does a strip hold peroxide against the enamel?
The strip holds peroxide against enamel. It cannot whiten fillings, crowns, veneers, or bonding, and tartar must be removed by a dental professional rather than bleached.
How can whitening strips be used without harming gums?
Check the label instructions, keep gel off the gums, stop if marked irritation or pain develops, and have a dental examination before using strips on a painful tooth.
When is tooth discolouration unsuitable for whitening strips?
See a dentist for toothache, gum burns that persist, a cracked tooth, decay, or a single dark tooth because whitening is not a diagnosis.
Will whitening strips suit this discolouration and dental work?
Ask whether the discolouration is suitable for strips and how existing dental work will appear afterward.
Frequently asked questions
Can this be managed at home?
Check the label instructions, keep gel off the gums, stop if marked irritation or pain develops, and have a dental examination before using strips on a painful tooth.
What should prompt an appointment?
See a dentist for toothache, gum burns that persist, a cracked tooth, decay, or a single dark tooth because whitening is not a diagnosis.
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.