Opal essence teeth whitening
Opalescence whitening uses peroxide gel to oxidize tooth stains, with the method chosen for your enamel, gums, and restoration history.
The short answer
Opalescence is a peroxide-based tooth-whitening system that lightens some stains by oxidizing colored molecules in enamel and dentin. It may be delivered in custom trays or another professional format, depending on the product and clinical plan.

What is the direct answer?
What does this question mean?
Whitening changes the color of natural tooth structure, not the color of fillings, crowns, veneers, or implants. The result depends on whether discoloration is on the surface or within the tooth and whether the enamel and gums are healthy enough for treatment.
What can you do next?
A dentist should check for cavities, cracked enamel, gum inflammation, exposed roots, and existing restorations before selecting gel strength and wear instructions. Use only the amount and contact time prescribed for the chosen system, and stop if marked gum irritation or persistent sensitivity develops.
When should you seek dental care?
Arrange an assessment before whitening if a tooth is painful, has a new dark spot, or reacts strongly to temperature. Seek care during treatment for severe pain, ulcerated gums, facial swelling, or symptoms that do not settle after the gel is stopped.
What should you ask the dentist?
Ask whether your stains are likely to respond, whether any restorations will need color matching later, which Opalescence formulation is being used, and how the tray should fit around the gumline. Ask how to manage sensitivity and what signs mean you should pause treatment.
Frequently asked questions
Will whitening remove a filling's stain?
No. Whitening affects natural tooth structure, so an old restoration may remain a different shade.
Why can teeth feel sensitive afterward?
Peroxide can temporarily increase sensitivity by moving through tooth structure and irritating the pulp or exposed dentin; the plan may need adjustment.
