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TEETH WHITENING3 min read

Why Are My Teeth Yellow Even After Brushing Twice a Day?

Yellow teeth can reflect natural colour, surface stains or a change inside the tooth. Brushing harder is rarely the answer.

Healthy teeth are not always bright white

Natural tooth colour varies. Enamel is partly translucent and the dentin underneath is more yellow. As enamel changes with age, more of the underlying colour may show. Brushing twice a day removes plaque and helps prevent disease; it cannot change the natural colour of your dentin.

A yellow shade is not, by itself, proof that teeth are dirty or unhealthy. A sudden change in one tooth, dark patches, pain or new sensitivity deserves a dental examination because those changes may have a different cause.

Surface stains and deeper colour changes

Tea, coffee, tobacco and strongly coloured foods can leave stains on the surface. Plaque and tartar may make them more noticeable. A professional cleaning can remove deposits and some surface stains, revealing the colour underneath. It does not bleach the natural tooth shade.

Colour can also change within a tooth. Previous injury, decay, some medicines during tooth development and ageing are possible reasons. If one tooth has become darker than its neighbours, ask a dentist to check it rather than applying whitening products to everything.

Will whitening toothpaste or strips help?

Many whitening toothpastes mainly remove surface stains through polishing. They do little for colour inside a tooth. Peroxide-based whitening products can lighten natural teeth, but the result varies and sensitivity or gum irritation can occur. Crowns, veneers and tooth-coloured fillings do not whiten along with natural teeth.

Before whitening, discuss cavities, gum health, existing restorations and sensitivity with a dentist. This helps you choose a suitable method and understand what shade change is realistic.

Avoid brushing harder to chase a lighter shade

Forceful brushing and abrasive home remedies can wear tooth surfaces and irritate gums without fixing the underlying colour. Use a soft brush and fluoride toothpaste, and clean between teeth daily. Lemon or charcoal mixtures are not a reliable substitute for professional advice and may cause harm.

If the colour bothers you, ask whether cleaning, whitening or a different treatment addresses the actual cause. The right starting point is identifying why the teeth look yellow.

Have a question about your own teeth? Talk with our team in Chembur West.

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