What is the direct answer?
Professional whitening uses peroxide gel to lighten natural enamel and dentine after an oral-health assessment.
What does this question mean?
The gel breaks down some stain molecules but does not recolour fillings, crowns, veneers, or bonding.
What can you do next?
A dentist checks decay, cracks, gum inflammation, exposed roots, and sensitivity before selecting in-office or take-home treatment.
When should you seek dental care?
Seek care for persistent sensitivity, gum irritation, sharp pain, or a single dark tooth.
What should you ask the dentist?
Ask what caused the colour change, which method fits, and whether restorations need separate treatment.
Frequently asked questions
What should I remember first?
Professional whitening uses peroxide gel to lighten natural enamel and dentine after an oral-health assessment.
When is an examination needed?
Seek care for persistent sensitivity, gum irritation, sharp pain, or a single dark tooth.

