Tooth Whitening

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Tooth Whitening

What is tooth whitening?

Tooth whitening can be a very effective way of lightening the natural colour of your teeth without removing any of the tooth surface. It cannot make a complete colour change, but it may lighten the existing shade.

Why would I need my teeth whitened?

There are a number of reasons why you might get your teeth whitened. Everyone is different; and just as our hair and skin colour vary, so do our teeth. Very few people have brilliant-white teeth, and our teeth can also become more discoloured as we get older.
Your teeth can also be stained on the surface by food and drinks such as tea, coffee, red wine and blackcurrant. Smoking can also stain teeth.
‘Calculus’ or tartar can also affect the colour of your teeth. Some people may have staining under the surface, which can be caused by certain antibiotics or by tiny cracks in the teeth which take up stains.

What does tooth whitening involve?

Professional bleaching is the most usual method of tooth whitening. Your dentist will be able to tell you if you are suitable for the treatment.
Your dentist will then take impressions of your mouth and you will have specially designed trays made at a laboratory, you will then be given whitening gel.
The ‘active ingredient’ in the gel is usually hydrogen peroxide or carbamide peroxide. As the active ingredient is broken down, oxygen gets into the enamel on the teeth and the tooth colour is made lighter.
Your dentist will discuss with you how long & often to use the whitening gel.

How long will my teeth stay whiter?

The effects of whitening are thought to last up to three years. However, this will vary from person to person. The effect is less likely to last as long if you smoke, or eat or drink products that can stain your teeth. Ask your dental team for their opinion before you start the treatment.

What are the side effects?

Some people may find that their teeth become sensitive to cold during or after the treatment. Others may have discomfort in the gums, a sore throat or white patches on the gum line. These symptoms are usually temporary and should disappear within a few days of the treatment finishing.
If any of these side effects continue you should go to your dentist.

Can a single tooth which has been root filled be whitened?

Yes. Sometimes dead teeth go discoloured after a root filling. If the tooth has been root treated, the canal (which contained the nerve) may be reopened. The whitening product is applied from the inside to whiten the tooth.