Whitening solution
A whitening solution uses peroxide to lighten some natural stains, but the method depends on the stain, tooth health, sensitivity, and restorations.
The short answer
Dental whitening solutions usually contain carbamide peroxide or hydrogen peroxide. These compounds diffuse through enamel and dentine and break down some coloured molecules, changing the appearance of natural tooth structure rather than adding a white coating.
What is the direct answer?
What does this question mean?
Whitening responds best to some external stains and selected internal discolouration, while fillings, crowns, veneers, and bonding do not change shade in the same way. Cavities, cracked teeth, gum inflammation, exposed roots, and strong sensitivity can change whether whitening should be started and how it is delivered.
What can you do next?
Have the teeth and gums examined before choosing a product. A dentist may clean surface deposits, identify the stain, protect the gums, provide a fitted tray or supervised in-office application, set an exposure schedule, and review sensitivity or uneven colour afterward.
When should you seek dental care?
Seek dental care for pain, gum burning, a single tooth that darkens, or sensitivity that persists after stopping a whitening product. A darkened tooth may have pulp damage or another cause that requires diagnosis before cosmetic treatment.
What should you ask the dentist?
Ask what type of stain you have, whether existing restorations will need colour planning, and which concentration and application time fit your mouth. Ask how to manage sensitivity and what result is realistic without damaging the gums or overusing the product.
Frequently asked questions
Can whitening solution remove every stain?
No. Some internal stains, developmental changes, and restorations respond poorly or need a different cosmetic approach.
Why are my teeth sensitive after whitening?
Peroxide can temporarily affect fluid movement through dentine, especially when dentine is exposed or the exposure is excessive.