Crest 18 levels whiter
Crest whitening strips use peroxide gel to break down some surface stains, but the result depends on the stain and natural tooth structure.
How much can peroxide whitening strips lighten teeth?
Crest whitening strips use peroxide gel to break down some surface stains, but the result depends on the stain and natural tooth structure.
How do whitening strips place peroxide against enamel?
The strip places peroxide against enamel. Peroxide can alter organic stain molecules, but it does not change fillings, crowns, or veneers in the same way as natural teeth.
How should whitening strips be used according to the label?
Follow the current label and use strips only on the stated surfaces. Dental examination should precede whitening when there is pain, decay, gum disease, cracks, or visible restorations.
When should sensitivity or irritation be checked?
Arrange care for pain, gum irritation, untreated decay, or sensitivity that persists. A dentist can identify the stain and discuss suitable whitening or alternatives.
What should be checked before whitening discoloured teeth?
Ask what caused the discoloration, whether restorations will match, and how sensitivity will be managed.
Frequently asked questions
Can this problem resolve without dental treatment?
Symptoms may fluctuate, but treatment depends on the diagnosed cause and damaged tissue.
What information helps at an appointment?
Describe onset, triggers, medicines used, and any swelling, bleeding, trauma, or visible change.
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.