Tooth whitening can be a very effective way of lightening the natural colour of your teeth with removing any of the tooth surface.
Professional bleaching is the most usual method of tooth whitening. Your dentist will assess you first to see whether tooth whitening is suitable for you. They will tell you about the options you have for tooth whitening and which will be the most suitable for you.
You will have trays made specially to fit into your mouth like gum-shields. The whitening gel is then put in the trays and you will be given a routine to follow at home.
Another option is called ‘chair-side whitening'. You will be told if you are suitable for the treatment, and your dentist will supervise it. First the dentist, hygienist or therapist will put a rubber shield or a gel on your gums to protect them. They will then apply the whitening product to your teeth, again using a specially made tray.
The ‘active ingredient' in the whitening product is usually hydrogen peroxide or carbamide peroxide. As the active ingredient is broken down, oxygen gets into the enamel and dentine of the teeth and the tooth colour is made lighter.
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 dentist for their opinion before you start the treatment.
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.