Crest professional level whitening strips
Whitening strips use a peroxide gel against the tooth surface; choose them by ingredient, fit, instructions, and your dental condition.
The short answer
Whitening strips use a peroxide gel against the tooth surface; choose them by ingredient, fit, instructions, and your dental condition. They lighten suitable natural teeth, while fillings, crowns, and veneers retain their original shade.
What is the direct answer?
What does this question mean?
A strip is a flexible carrier coated with a whitening formulation that contacts enamel for a prescribed time. Peroxide molecules break down some stain compounds, but the result depends on the starting stain, tooth anatomy, contact, and use instructions.
What can you do next?
Read the active ingredient and follow the pack directions without extending contact time. Do not apply strips over untreated decay, gum inflammation, exposed roots, or a cracked tooth; resolve those problems first.
When should you seek dental care?
Ask for an examination before use if you have pain, cavities, gum bleeding, or a dark single tooth. Stop if burning, marked gum whitening, or sensitivity persists and request clinical advice.
What should you ask the dentist?
Ask whether your discoloration is external or internal and whether strips can reach the visible surfaces evenly. Ask how existing restorations will affect the final shade and what alternative is suitable if strips do not fit.
Frequently asked questions
Can strips whiten crowns?
No. Crowns, veneers, and fillings keep their existing shade while natural teeth may lighten.
Why do strips cause sensitivity?
Peroxide can move through enamel and dentine toward the pulp, and exposed root surfaces can react more readily.