Perfect smile teeth whitening
Teeth whitening lightens some surface and internal stains, but results depend on the stain, enamel, restorations, and chosen method.
The short answer
Teeth whitening lightens some surface and internal stains, but results depend on the stain, enamel, restorations, and chosen method. Whitening changes natural tooth colour and does not change the colour of fillings, crowns, or veneers.
What is the direct answer?
What does this question mean?
Whitening uses peroxide compounds to break down colour molecules in tooth structure. Surface stains from foods or tobacco may respond differently from deeper discoloration caused by trauma, medication, or changes in enamel and dentin.
What can you do next?
A dentist first checks for cavities, cracked teeth, gum inflammation, and mismatched restorations. They may recommend professional whitening, a fitted home tray, or cleaning before whitening, with desensitising measures if needed.
When should you seek dental care?
Have an examination before whitening if teeth hurt, gums bleed, or one tooth is darker than the others. Stop the product and seek advice if pain persists or the gums become irritated.
What should you ask the dentist?
Ask what caused the discoloration, whether existing restorations will match afterward, and which method suits your enamel and gums. Ask how to manage sensitivity and maintain the new shade.
Frequently asked questions
Will whitening make every tooth the same colour?
Not always, especially when crowns, fillings, or a single internally stained tooth are present.
Why do my teeth feel sensitive after whitening?
Peroxide can temporarily irritate the tooth's nerve pathway, particularly when enamel or dentin is exposed.