What is the direct answer?
Dentists choose whitening after checking the cause of discoloration, gum health, enamel, sensitivity, cavities, and existing restorations.
What does this question mean?
Professional whitening uses peroxide gel, while systems differ in concentration, contact time, trays, and supervision. It changes some natural tooth colour but not crowns, veneers, fillings, or tartar.
What can you do next?
A dentist examines the teeth and gums, treats active disease, records the starting shade, and selects in-office whitening or a fitted home tray when appropriate. Avoid unregulated mixtures and prolonged contact.
When should you seek dental care?
Book an assessment for uneven discoloration, a single dark tooth, pain, inflamed gums, cavities, cracks, or exposed roots.
What should you ask the dentist?
Ask which stain you have, whether restorations will match, which peroxide system is proposed, and how sensitivity or gum irritation will be managed.
Frequently asked questions
Could this have more than one cause?
Yes. Examination separates local irritation, tooth disease, gum disease, and oral-lining conditions that can feel similar.
What will the dentist check first?
The dentist will take a focused history, inspect the area, and use probing, tests, or imaging when the findings call for them.

