Teeth can also become stained by bacterial pigments, foodstuffs and tobacco. Various chemical and physical agents can be used to whiten teeth .There are many methods to whiten teeth: bleaching strips, bleaching pen, bleaching gel, laser bleaching, and natural bleaching. Whitening is not a permanent solution.

The stains will come back. If you smoke or consume a lot of staining foods or drinks, you may see the whiteness start to fade in as little as one month. To use such a method form which we can make our teeth long time white try to use whitening gel. The most common type of vital tooth whitening uses a gel-like whitening solution. This product usually contains hydrogen peroxide.

Whitening (bleaching) can be done either in a dentist’s office or at home, using a system dispensed by your dentist. Both methods use tooth-bleaching gels that oxidize out the stain. At-home whitening is the more popular approach today. To protect your mouth, a gel-like substance may be applied to your gums and a rubber “shield” may be placed around the necks of the teeth. Bleaching solutions contain peroxide which bleaches the tooth enamel to change its color.