New white teeth whitening
Professional teeth whitening lightens natural tooth colour by oxidising stain molecules within enamel and dentin.
The short answer
Teeth whitening uses a peroxide gel to break down certain stain molecules in natural enamel and dentin; it does not change the colour of fillings, crowns, or veneers. A dental examination comes first when discoloration may be decay, a crack, or a diseased pulp.
What is the direct answer?
What does this question mean?
Newly bright teeth usually reflect removal or chemical breakdown of extrinsic stains from drinks, tobacco, or food, plus a lighter response from the tooth’s internal colour. Intrinsic changes from trauma, fluorosis, or medication may need another approach.
What can you do next?
A dentist can examine the enamel, gums, restorations, and existing sensitivity before choosing an in-office or take-home tray system. Follow the prescribed gel amount and contact the clinic if burning, ulceration, or persistent sensitivity develops.
When should you seek dental care?
Seek examination before whitening if one tooth has changed colour, the tooth hurts, or the surface has a cavity or fracture. Dental care is also needed when whitening gel repeatedly irritates the gums.
What should you ask the dentist?
Ask whether the darkening is surface stain or internal tooth colour, whether restorations will match afterward, and which peroxide concentration and tray design suit your teeth. Ask how sensitivity will be managed.
Frequently asked questions
Will whitening make crowns white?
No. A crown keeps its existing shade, so shade matching is planned before restorative work.
Why do my teeth feel sensitive after whitening?
Peroxide can temporarily irritate dentin pathways and the pulp; the dentist can adjust exposure and manage the symptom.