Teeth whitening involves bleaching your teeth to make them lighter. Teeth whitening isn’t designed to make your teeth brilliant white, but it can lighten the existing colour by several shades.
Teeth whitening is a form of dentistry and should only be performed by a dentist or another regulated dental professional, such as a dental hygienist or dental therapist, on the prescription of a dentist.
Some beauty salons offer teeth whitening, but this is illegal if there’s no dental professional present, and it may put your oral health at risk.
The dentist will take an impression of your teeth to make a mouthguard and will instruct you how to use it with a bleaching gel. Then, using your mouthguard at home, you regularly apply the gel for a specified period of time over two to four weeks.
No, teeth whitening isn’t permanent. It can last from a few months to up to three years, but this varies from person to person. Generally, the whitening effect won’t last as long if you smoke or drink red wine, tea or coffee, which can all stain your teeth.
No. Teeth whitening won’t work on dentures, crowns, fillings or veneers.
No matter what treatment you use, there is a chance your temporary irritation to gums and temporary sensitivity to teeth and your teeth can be sensitive to the chemicals used in teeth whitening, especially if you already have sensitive teeth.