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Stained and discoloured teeth in Kallangur

Stained Teeth and Teeth Discolouration

Why teeth change colour, and what fixes it

Stained teeth are one of the most common things people in Kallangur ask us about. Some stains sit on the surface and lift with a clean or whitening. Others come from inside the tooth and need a different approach. At Kallangur Dental Surgery we work out which kind of teeth discolouration you have first, so you spend your money on a treatment that will actually change the colour.

Professional teeth whitening, in the chair or at home
Bonding and veneers for stains whitening cannot shift

Book an Appointment (07) 3886 0933

Your next step

Want whiter, brighter teeth?

Book a visit with Dr Sonia and the Kallangur Dental Surgery team. We will look at the shade and cause of your discolouration, check that your teeth and gums are healthy enough for whitening, and explain the options, from professional teeth whitening to bonding or veneers, with a written estimate.

Book an Appointment (07) 3886 0933

In-chair and take-home whitening options
Bonding and veneers for deeper discolouration
HICAPS claiming for all health funds
Payment plans available

Accredited & compliant

Coffee, tea and red wine, everyday causes of stained teeth

Two kinds of stain

What causes teeth discolouration?

Surface (extrinsic) stains build up on the outer enamel. The usual suspects are coffee, tea, red wine, cola, curries and smoking or vaping, along with plaque and tartar that pick up colour over time. These stains respond well to a professional scale and polish and to whitening.

Deep (intrinsic) discolouration comes from inside the tooth. As we get older the enamel wears thinner and the naturally yellower dentine underneath shows through, which is why yellow teeth are so common with age even for people who brush well. Some medications taken while teeth were forming, too much fluoride in childhood, enamel defects, old metal fillings and decay can also change a tooth's colour from within.

Knowing which type you have is the key to choosing the right fix, and it takes a quick examination to tell them apart.

Woman smiling with one upper front tooth noticeably greyer than the others

A single dark tooth

Why is one tooth darker than the others?

A single grey or dark tooth is different from general staining and should be checked. The most common reason is an old knock to the tooth, sometimes years earlier, that damaged the nerve inside. As the nerve breaks down, the tooth darkens from within.

We test the tooth and take an X-ray to see whether the nerve is still healthy. If it has died, root canal treatment may be needed first, both for the health of the tooth and so that any colour treatment lasts. Once the tooth is healthy, its colour can be improved with internal whitening, bonding, a veneer or a crown, depending on how dark it is.

Your options

Discoloured teeth treatment options

The right treatment depends on where the stain sits and how much you want to change. These are the options our Kallangur dentists most often recommend for discoloured teeth.

Professional Teeth Whitening

Whitening gel applied in the chair, or in custom trays at home, lightens natural enamel. It works well on yellow teeth and surface stains and is usually a sensible first step.

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Composite Bonding

Tooth-coloured resin is layered over a stained or mottled area and shaped by hand. A good option for patchy white spots or one discoloured tooth.

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Porcelain Veneers

Thin porcelain facings bonded to the front teeth. They cover deep discolouration that whitening cannot reach and resist new staining well.

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Root Canal Treatment

For a single tooth that has darkened because its nerve has died, treating the root comes first, then the colour can be corrected.

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Woman sipping iced coffee through a straw with a glass of water beside it, two habits that limit staining

Keep the colour

How to prevent stained teeth

After whitening or cosmetic work, a few habits help your teeth stay bright longer:

Brush twice a day and clean between your teeth so plaque does not have a chance to take up stain.
Rinse with water after coffee, tea or red wine, and use a straw for iced coffee and soft drinks.
Wait 30 minutes to brush after acidic food or drink, which protects softened enamel.
Quit smoking or vaping, the fastest way stains return.
Book a regular check-up and clean, where a polish removes new surface staining before it sets in.

Good to know

Teeth Discolouration - frequently asked

Can stained teeth be whitened?

Surface stains and general yellowing usually respond well to professional whitening, often combined with a clean first. Deep grey or brown staining from medications, enamel defects or a dead nerve responds less predictably, and bonding or veneers may give a better result. We check which type you have before recommending anything.

Whitening, bonding or veneers for stained teeth?

Whitening suits healthy teeth with surface staining or natural yellowing, and does not change the teeth themselves. Bonding covers small patches or a single tooth in one visit. Veneers suit deeper discolouration across several front teeth, or when you also want to change shape. Many people start with whitening and add bonding or veneers only where needed.

Why are my teeth yellow even though I brush every day?

Brushing removes plaque and some surface stain, but it cannot change the colour inside the tooth. With age the enamel thins and more of the yellow dentine shows through. Genetics and some medications play a part too. Professional whitening can lighten that underlying shade.

Will whitening change the colour of my fillings or crowns?

No. Whitening only lightens natural enamel. Existing fillings, crowns and veneers stay the same shade, so if they are on your front teeth we usually whiten first and then replace or match the dental work afterwards.

Is professional teeth whitening safe?

When a dental professional checks your teeth and gums first and supervises the treatment, whitening is generally safe. Some people notice short-term sensitivity, which usually settles within a few days. Overusing strong products without supervision can irritate gums and increase sensitivity.

How long does whitening last?

It varies with your habits. Results commonly last from several months to a couple of years. Coffee, tea, red wine and smoking shorten that time, while good home care and an occasional refresh with your take-home trays help keep the shade.

Still have questions?