Teeth whitening
Types of teeth whitening:
• Home Whitening:
a) Under the supervision of a physician - require production of individual tooth caps.
b) Uncontrolled whitening - use standard mouthguards.
• Professional whitening (in a dental office):
a) Vital bleaching - outside.
b) non-vital bleaching.
• Mikroabrazivnoe bleach - surface manipulations do not affect the structure of the enamel:
a) Scaling and plaque ultrasonic method (scaler Airflow).
b) Polishing with abrasive brushing with fluoride toothpaste.
c) Coverage fluoride varnishes, penetrating into the structure of enamel
What distinguishes the home and professional whitening?
The main differences are:
• the concentration of bleaching agent (at home bleaching is a 10 - 15%, with a professional - 30 - 35%).
• the exposure time to the teeth: in the home - the wearing of mouthguards for 2-3 weeks, with professional whitening duration depends on the method used, and on average 1 visit.
• to isolate the gingival margin at home bleaching requires making special caps, and with professional whitening uses a special light-barrier, which is also used to close cavities and different enamel defects, such as wedge-shaped defects.
• the professional bleaching is an additional physical activates the whitening agent factor (laser, UV, heat, light, halogen light), which allows for better and more consistent effect of bleaching.
How does bleaching?
Whitening - a chemical process in which organic compounds are eventually oxidized to water and carbon dioxide. The oxidizing ability of hydrogen peroxide due to the possibility of the latter breaks down into water and oxygen free radicals.
During bleaching PV penetrates to organic matrix of enamel and dentin surface layers. Oxidation of organic matter occur in the spaces between the inorganic salt crystals of enamel. Dark pigment in the enamel of the tooth due to the presence of complex molecular compounds containing carbon rings. At the initial stage, the gap of the rings and the compound is converted into a linear chain, which is much lighter. Carbon ring with double valence bonds (yellow) are transformed into colorless gidrooksilnye group. Thus, the enamel becomes lighter.
When the bleach can be used?
Persistent staining of hard tissue of teeth (diskolorit) occurs for different reasons. This may be an external color - various deposition of dyes, contained in coffee, tea, red wine, tobacco, on the tooth surface or internal - staining of the solid tissues of the teeth. In this regard, there are different cases that are easy to bleach:
1) Pigment-ups, dental plaque.
2) Age-related changes in tooth color.
3) Yellow or brown staining of hard tissue of teeth.
It is difficult to bleach: 1) congenital discoloration (tetracycline teeth).
2) High transparency of tissue, the gray color.
3) staining of dentin exposed by the oral cavity.
Dental plaque can be easily eliminated with the help of professional oral hygiene using an ultrasonic scaler tip and a soda blast unit. If there is an internal staining, we must engage in proper bleaching.
Laser teeth whitening - the leader in popularity among the aesthetic dental procedures in our clinic. The temperature regime of the laser system does not violate the natural tooth structure, working gently and physiologically, ensuring the highest possible bleaching effect. It should be noted that this technology completely eliminates the possibility of damage to the enamel of the tooth and surrounding tissues, in contrast to the abrasive and chemical methods. Duration of procedure 30-40min.