Colgate optic white pro series kit
A peroxide kit can lighten some natural stains as directed, but fillings and crowns do not change and sensitivity may occur.
The short answer
A peroxide whitening kit can lighten some natural tooth stains when used exactly as directed, but it will not change fillings or crowns and may cause sensitivity or gum irritation.
What is the direct answer?
What does this question mean?
A take-home kit uses a peroxide gel in a tray or strip system to oxidize some stain molecules within natural enamel and dentin. The product label determines application, contact time, storage, and replacement schedule, so the package instructions matter more than a generic routine.
What can you do next?
Check the seal, ingredients, directions, and expiry information before use. Do not use the kit over untreated cavities, cracked teeth, or inflamed gums without dental advice; stop and rinse if burning or marked sensitivity develops.
When should you seek dental care?
Ask a dentist to examine the teeth before whitening if you have pain, cavities, gum recession, restorations, or one tooth that is darker. Seek care for persistent sensitivity, gum injury, swelling, or a color change that does not fit ordinary staining.
What should you ask the dentist?
Ask whether the kit is suitable for your teeth, how the tray or strips should contact the enamel, and how to manage sensitivity. Ask which restorations will remain unchanged and whether shade matching is needed afterward.
Frequently asked questions
Can I leave the gel on longer for a stronger result?
No. Longer contact than the label states can increase irritation and sensitivity without making the method appropriate.
Why is one tooth not whitening?
A dark single tooth may have pulp changes, a restoration, or internal staining that needs diagnosis rather than repeated bleaching.