Colgate optic white professional kit
A professional whitening kit uses a peroxide gel in trays to lighten natural tooth colour by oxidising stain molecules.
The short answer
A professional whitening kit uses a peroxide gel in trays to lighten natural tooth colour by oxidising stain molecules. Whitening gel acts mainly on natural enamel and dentine, while crowns, fillings, veneers, and composite restorations do not change colour in the same way. A dental examination checks for cavities, cracks, inflamed gums, exposed roots, and restorations first.
Why do restorations respond differently from natural teeth?
Whitening gel acts mainly on natural enamel and dentine, while crowns, fillings, veneers, and composite restorations do not change colour in the same way. A dental examination checks for cavities, cracks, inflamed gums, exposed roots, and restorations first.
How should you use and clean the whitening trays safely?
Follow the label for gel amount, tray wear time, storage, and cleaning, and keep gel off the gums. If sensitivity occurs, pause as directed and use a desensitising toothpaste containing fluoride or potassium salts.
When should you stop the kit and contact a dentist?
Stop and contact a dentist for persistent pain, gum burning, ulceration, marked sensitivity, or an uneven result. Do not whiten over untreated decay or inflamed gums.
Will the whitening kit change the colour of fillings?
Will the kit whiten fillings? No. The gel lightens natural tooth structure, so a visible filling or crown may need shade assessment after whitening.
Frequently asked questions
Why can sensitivity happen?
Peroxide can temporarily move through enamel and dentine toward the pulp, provoking sensitivity, especially with excessive exposure or exposed roots.
Will the kit whiten fillings?
No. The gel lightens natural tooth structure, so a visible filling or crown may need shade assessment after whitening.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.