Is kor whitening safe
KöR whitening uses peroxide gel, and its risks depend on concentration, tray fit, gum condition, enamel, exposed roots, and untreated dental disease.
The short answer
The system combines a peroxide gel with a delivery tray. Peroxide can pass through enamel and dentine to break down some internal stains, but restorations do not bleach.
How should you use whitening treatment safely and as prescribed?
Have the teeth examined first, use the prescribed tray and gel amount, and report sensitivity rather than increasing or extending treatment. Keep gel off soft tissue.
Which symptoms mean you should stop whitening and seek care?
Seek care for severe sensitivity, gum ulceration, cavities, cracks, or a dark tooth. Whitening should not mask a disease process or delay restorative treatment.
What should you check before starting whitening treatment?
Ask which formulation and schedule are intended for you, how exposed dentine will be protected, and whether crowns or fillings need replacement for shade matching.
Which active agent is used in this whitening system?
Active agent
Frequently asked questions
Peroxide can trigger temporary sensitivity, and the likelihood depends on tooth and treatment factors.
Can I use it with cavities?
Keep reading
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.