How to clean discoloured teeth
Discoloured teeth may improve with professional cleaning when stain is on the surface, but internal colour changes need different treatment.
The short answer
Brush twice daily with fluoride toothpaste, clean between the teeth, and have a dentist identify whether the colour is surface stain, enamel change, decay, or a change inside the tooth. Cleaning cannot remove every type of discoloration.
What causes stains on the outside of teeth?
Extrinsic stains sit on enamel and may come from tobacco, coffee, tea, or plaque. Intrinsic changes occur within enamel or dentine and can follow injury, developmental enamel changes, decay, or certain medicines.
How can you clean stains without harming enamel?
Use a soft toothbrush and avoid abrasive powders, acidic scrubs, and repeated peroxide applications. A dental hygienist can remove calculus and surface stain; a dentist can discuss whitening, bonding, veneers, or restorative treatment when the colour change is internal.
When does tooth discolouration need examination?
Arrange a dental examination if one tooth darkens, the colour change follows an injury, there is a hole or sensitivity, or the discolouration does not improve after plaque and stain removal. Sudden darkening can indicate a problem inside the tooth.
What should you ask about the cause of the colour?
Ask whether the colour is external or internal, whether the tooth pulp is healthy, which treatment matches the cause, and how existing fillings or crowns will affect the final shade.
Frequently asked questions
Can brushing remove all yellow teeth?
Brushing removes plaque and some surface deposits, but natural dentine colour and internal staining remain.
Are whitening strips suitable for every discoloured tooth?
They may not address a dead or decayed tooth, and exposed dentine or gum tissue can become sensitive.
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.