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Dental conditions

Yellow teeth

Teeth naturally change colour over time, and some stains come from what we eat and drink. The right fix depends on the cause, so we check that first, before you spend anything.

Also called: tooth discolouration, stained teeth

Book an appointment Call 02 9436 1874
Close-up of yellowed teeth before and after a clean

Sound familiar?

  • Teeth that look more yellow than they used to
  • Brown or grey stains on the surface
  • One tooth that's darker than the others
  • Whitening toothpaste isn't making a difference

What's usually behind it

Surface stains build up from coffee, tea, red wine, smoking and some foods. As we age, enamel naturally thins, letting more of the yellower layer underneath (dentine) show through. Some medications taken in childhood can affect tooth colour from within. A single tooth that darkens, often after a knock, can mean the nerve inside has been affected and should be checked. Tartar build-up can also look yellow.

What you can do at home

  • Rinse with water after coffee, tea or red wine
  • Brush twice a day and clean between your teeth
  • Whitening toothpastes can lift some surface stains, but they don't change the natural colour of your teeth
  • Avoid DIY whitening like charcoal, lemon or baking soda, which can wear enamel

When to see a dentist

  • One tooth has changed colour
  • Before starting any whitening, to check your teeth and gums are healthy and whitening will work for you
  • You have fillings, crowns or veneers at the front, as these don't whiten

How we help at Nest

We start with an assessment, so you know what's causing the colour before you spend anything. A professional clean and polish removes surface stains, and for some people that's enough. For a lighter shade, we offer take-home whitening and in-chair whitening, supervised by a dentist. Results vary from person to person, and we'll tell you what's realistic for your teeth. If a single tooth has darkened, we'll check its health first.

A smile split down the middle, showing yellow teeth on one side and white teeth on the other

Common questions

Often they can become noticeably lighter. How much depends on the cause, which is why we assess first.

When it's supervised by a dentist, whitening is generally safe. Some people have temporary sensitivity, which settles after treatment.

No. Fillings, crowns and veneers keep their colour, so we plan around them.

In-chair whitening works in one visit. Take-home whitening works gradually over a couple of weeks. We'll help you choose.

This can happen after an injury, when the nerve inside the tooth is affected. It's worth having checked before any whitening.

Related

Sensitive teeth

Also called: dentine hypersensitivity

A twinge from cold drinks or sweet food, and what's usually causing it.

Learn more

Crooked teeth

Also called: crowding, malocclusion

Crowded, gappy or shifting teeth, and why straightening is about more than looks.

Learn more

Chipped or cracked tooth

Also called: cracked tooth syndrome

A broken edge, or a sharp twinge when you bite that disappears as quickly as it came.

Learn more

Talk it through with us

We'll look at what's going on, explain your options and costs before anything starts.

Book an appointment Call 02 9436 1874

Reviewed by Dr Viki Karassellos, Dentist, Nest Dental. Last reviewed September 2026. This page is general information, not a diagnosis. Please see a dentist about your own situation.