The bleaching of teeth is based on carbamide peroxide as a component.
Unlike mechanical polishing of the teeth, which removes deposited discoloration, the gel has a chemical effect on the inside of the teeth.
Hydrogen peroxide and urea are obtained.
Hydrogen peroxide decomposes into oxygen radicals which penetrate into the tooth.
Incorporated colorants are
thus reduced to colourless cleavage products (e.g. Fe2O3 to FeO).
At the same time, the teeth are temporarily dehydrated (water removal),
so that if the gel is used excessively, the teeth can become hypersensitive.
The process has been tried and proven scientifically and is
recognised as being lastingly effective. |
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