Teeth whitening is a 150-year history: the first mention of lightening teeth date back 1,850 a year, and already in 1877, carried a description of methods of external bleaching, which proroditelem current approach. As bleach was proposed calcium hypochlorite, and the application for the same purpose hydrogen peroxide was first described in 1884. Modern technology, based on the activation of hydrogen peroxide by high-intensity light, proposed in 1918, the year, the widespread use of the same, this method was 1970 – 1980-xx years. In Russia, a vast and well-deserved popular home teeth whitening system in view of their dospunosti and maximum efficiency and effectiveness. Types of teeth whitening 1. Teeth whitening at home a) Under the supervision of a physician – to the individual manufacturer of tooth caps. b) Uncontrolled teeth whitening at home – are used standard tray.
2. Professional teeth whitening (at a dental clinic) a) Vital bleaching – Outdoor (vnekoronkovoe). b) bleaching devitalized – vnutrikoronkovoe. What are the differences in tooth whitening home and professional whitening? Differences: The concentration of bleach solution (household bleach – 10 – 15%, professional – 30 – 35%). time of exposure to the teeth: in home wearing mouth guards – 2-3 weeks at professional whitening duration of the course depends on the applied methodology, an average of 2 visits.
to isolate the gums with home bleaching to produce special caps at professional whitening uses a special light-cured barrier is also used to close cavities and various defects of enamel. with professional teeth whitening is used additional physical activates the whitening agent factor (laser, UV, heat, light, halogen light), which improves the result and more consistent effect of bleaching. What is the process tooth whitening? Tooth whitening – a chemical process that results in the oxidation of organic compounds to water and carbon dioxide. The oxidizing ability of hydrogen peroxide caused by chemical opportunity to break down into water and oxygen. During the teeth whitening peroxide penetrates the enamel and the upper layers of dentin. Oxidation of organic matter occurs in the spaces between the inorganic salt crystals of enamel. Dark pigment in the enamel of the tooth is defined by the presence of complex molecular compounds, which include carbon rings. At the initial stage of the ring is broken and the connection is transformed into linear chain, which is much lighter. Carboxylic ring with double valence bonds (yellow) are transformed into colorless gidrooksilnye group. Thus, the enamel becomes lighter. When whiten your teeth? Sustainable staining the teeth (diskolorit) occurs for different reasons. Exterior color – dye deposition, contained in coffee, tea, red wine, tobacco, on the tooth surface or internal staining – colorization of hard dental tissues. There are various cases which, without undue effort amenable to bleaching: Pigment-ups, dental plaque. Age discoloration of teeth. Yellow or brown darkening of the solid dental tissues. Hard-to bleaching: Congenital discoloration (tetracycline teeth). High transparency of tissue, the gray color. Staining nude dentin from the oral cavity.