This is especially true if you have suffered teeth trauma in the past and have gums that are easily irritated. Even if you do not have these issues, you may still need a mouth exam and an assessment of your gums. Your dentist is also in the best position to seek advice regarding over-the-counter system that could be used. Now did you know that the efficacy of the bleaching will depend on the amount of peroxide used in the toothpaste? And will also depend on the time used in contact with the teeth? The products that you can get normally from the supermarket will contain around 10 percent peroxide. And the pastes used professionally may contain up to 43 percent peroxide content. Under this procedure the whitening product, like the gel is applied to the teeth. And when used under the dentist-supervised procedure, this form of bleaching is used as complemented by a special light or the laser. In many cases, in just one visit the expected results can be seen immediately. But if the intent is to get that dramatic results in the form of shiny white teeth, then the person will need a number of visits to the dentist. It comes in pairs designed for the upper and the lower teeth configuration and is applied in areas where the teeth are visible as the person smiles. Unlike other teeth whiteners, the whitening is only on the aesthetic area and like all whitening products; it is kept in the mouth for a period of time. The whitening solutions may get into the decaying part of the teeth and this can result to sensitive teeth. If you have filling, crowns and restorations then it is not encourage that you try these teeth whitening procedures. The reason for this is that the whitening agents will not act on these. And if it does, then there will be uneven whitening on the teeth. But the main intent of this product is primarily for teeth whitening and this is because of its main ingredient- the hydrogen peroxide. Just like the ordinary mouthwash, you just need to swish the waster around the mouth for the next 60 seconds, and this should be done at least twice a day. Use this product for the next 12 weeks and you will see the results that you are looking for.