Teeth whitening at home kit from dentist
A dentist-provided home whitening kit uses a custom tray and a measured peroxide gel, with the dentist checking your teeth and gums before prescribing how
The short answer
A dentist-provided home whitening kit uses a custom tray and a measured peroxide gel, with the dentist checking your teeth and gums before prescribing how to use it.
What is the direct answer?
What does this question mean?
The tray holds whitening gel against the tooth surfaces while limiting contact with the gums. Peroxide molecules diffuse into enamel and dentin and break down some stain molecules, but fillings, crowns, and veneers do not whiten like natural teeth.
What can you do next?
The dentist examines for cavities, cracked teeth, gum inflammation, exposed roots, and existing restorations, then takes impressions or a digital scan for the tray. Follow the prescribed gel amount and wear time, stop if significant irritation develops, and keep the gel away from children.
When should you seek dental care?
Have a dentist assess sensitivity, gum burning, uneven colour, or whitening that does not change the shade of a dark single tooth. Dental treatment may be needed before whitening if decay, leaking restorations, or gum disease is present.
What should you ask the dentist?
Ask which gel concentration is prescribed, how the tray should fit, how to manage sensitivity, which restorations will not change colour, and when the shade should be reviewed.
Frequently asked questions
Can a dentist make a whitening tray for me?
Yes. A dentist can use impressions or a digital scan to make a tray and provide instructions for the selected gel.
Why can whitening cause sensitivity?
Peroxide can temporarily move through enamel and dentin and irritate the tooth nerve, particularly when teeth already have exposed dentin or cracks.