At the moment, there is a high level of controversy revolving around similar products, specifically dealing with the over all side effects of tooth whitening. Currently, the fear revolving around products such as Crest tooth whiteners deals with the prospect that the bleaching process may cause a form of mouth cancer. This is considered a harsh reality, as the bleaching process does harm the enamel on your teeth, which leaves them open for problems. The gums are also affected by this process, which leaves them open for forms of disease and cancer.
Despite this, however, the risks seem to be low when you use products such as Crest 7 day tooth whitener. The most a large percentage of the individuals using this product feel is a dull ache in teeth and gums during the bleaching process. This is the most predominate of the side effects tooth whitening has, and ends when you no longer use the bleaching process.
If you are uncertain that Crest 7 day tooth whitener will work safely for you, you can take advantage of the Internet and review sites that allows rating on teeth whiteners. This will allow you to see the differences between a wide variety of products, allowing you to make the best decision for you. The Rating on various teeth whiteners will also give you an idea of which products have the least side effects revolving around tooth whitening and which products work the best. With a little time and effort, you should be able to make the best decision for you.