Different types of whitening products for teeth bad for the dentin – the bone substance of the tooth.
Scientists from the University of Stockton in new Jersey, conducted the study and found as components of over-the-counter products for teeth whitening impact on the teeth themselves. On the eve of a conference in the United States, they presented the results of their work.
In the framework of their work, scientists found that the greatest impact on the teeth in the bleach having a hydrogen peroxide. There have been four separate studies of how this feature affects the dentin. It turned out that the peroxide oxidizes proteins in the dentin, causing the teeth become more sensitive. In fact, because hydrogen peroxide teeth get pinholes.
According to dentists, the majority of the teeth contains hydrogen peroxide in various proportions. Those drugs that without prescription buy in the store typically contain about 14 percent of bleach. Regular use of mouthwash or whitening strips will oxidize the protein in the layer of dentin and soon you will notice that the sensitivity will increase.
What kind of medication is to use and how much time it needs to be done, can tell a professional dentist. It should be noted that the reaction of the teeth to hydrogen peroxide of different people, so it is quite difficult to talk about some secondary norms. Each case is best considered individually.
As a substance that can reduce the negative impact of peroxide on the teeth, scientists called fluoride. For example, useful in the bleaching will be a fluoride toothpaste.