According to a study by Professor Ohio University (Shereen Azer) with Camilo Gonzalez and Robert Rashid from the Department of Restorative and prosthetic dentistry, and Eliana Sanchez from the Department of Primary Care will find that human teeth lost some hardness of enamel after using several other products used in homes for the bleaching of teeth . The study suggests that future generations of these products can be rewritten in efforts to reduce these side effects.


Teeth whitening products contain solutions of different strengths of either hydrogen peroxide or carbamide peroxide, which provide a whitening effect. They bleach teeth by producing free radicals, unstable molecules that attack the organic pigment in the enamel. Reduction of pigment molecules is already reflected light, so it appears whiter teeth.

Enamel, which is almost entirely inorganic and translucent, appear in most of the yellow teeth, because it reflects the color of dentin underneath, which is naturally yellow.According scientists to study the mean enamel loss in the range of 1.2 to 2 nm in the treated teeth. Control teeth, on average, in fact, gained 0.4 nanometers hardness compared beyond the treatment time. The ability to bounce back surface of the active force was reduced on average by 6 percent and 18.8 percent of treated teeth, depending on the type of treatment.

http://researchnews.osu.edu/archive/homebleach.htm