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.
The active ingredient in the product 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. 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.
You can help to keep your teeth white by cutting down on the amount of food and drinks you have that can stain teeth. Don't forget, stopping smoking can also help prevent discolouration and staining. We recommend the following tips to take care of your teeth: brush your teeth last thing at night and at least one other time during the day, with a fluoride toothpaste, cut down on how often you have sugary foods and drinks, visit your dental team regularly, as often as they recommend.