Whitening teeth treatment at home
Home whitening uses a peroxide gel in a tray or strip to lighten stains on natural teeth over a controlled treatment period.
The short answer
Home whitening uses a peroxide gel in a tray or strip to lighten stains on natural teeth over a controlled treatment period. Peroxide moves into enamel and dentine and breaks down some stain molecules. Tooth-coloured fillings, crowns, and veneers do not lighten, so mismatched restoration edges may become visible.

What is the direct answer?
What does this question mean?
Peroxide moves into enamel and dentine and breaks down some stain molecules. Tooth-coloured fillings, crowns, and veneers do not lighten, so mismatched restoration edges may become visible.
What can you do next?
A dentist can check for decay and gum disease, record the starting shade, and provide fitted trays with instructions. Use the stated amount, keep gel off the gums, and pause for significant sensitivity.
When should you seek dental care?
Have an examination first if you have pain, untreated cavities, gum bleeding, cracks, recession, or extensive restorations. Sudden darkening of one tooth needs diagnosis.
What should you ask the dentist?
Ask which product and concentration suit you, how long each application should last, and how existing restorations will be handled.
Frequently asked questions
What should the dentist check?
Ask which product and concentration suit you, how long each application should last, and how existing restorations will be handled.
Can home care replace an examination?
Home care may reduce irritation, but it cannot diagnose or repair a dental cause.
