Radiant white teeth smile is not necessarily can be given to man by birth. Today, teeth whitening - a procedure that is available to anyone. However, there are contraindications. During pregnancy and lactation do engage in teeth whitening is strongly discouraged. If you're prone to allergies to drugs used, then from this procedure, you should refrain. Needless teeth whitening does not harm, only - for some time the teeth will become a little more sensitive, but soon it will pass. Professional whitening is done in the dental clinics or in the salons, the master of which are licensed to provide such services. When bleaching is applied the active compound that interacts with the surface of the teeth. Deeper tissue tooth remain unaffected. Gums closing plate or grease protective gel. There are several types of dental bleaching.
Chemical bleaching. In this procedure, the active agent is carbamide peroxide. A session is usually conducted only one, and it lasts no more than half an hour. Chemical bleaching as is sometimes done at home, but here use stronger solutions that can damage the gums. Time for bleaching it requires more often to the procedure takes a few sessions.
Laser whitening. A newer method than chemical bleaching, and more soft and gentle. Applied to the teeth mixture, the main component of which is hydrogen peroxide. Then, the laser passes each tooth, stopping there for about half a minute. This whitening is very effective for only one procedure can lighten your teeth by several shades. In the procedure there is a "side effect" - disinfection of teeth, so laser whitening is the prevention of dental caries. The effect of bleaching lasts for about 7 years, if the person does not smoke and do not drink too much coffee. Laser teeth whitening can be done even if there is uncured caries.
Photobleaching. This method appeared behind the laser. When the procedure is used an active substance which is then exposed to halogen light splits into atomic oxygen, and it, in turn, decompose into its constituent darkened pigment dental tissue. The effect of photobleaching is kept for several years.
For those who for whatever reason do not wish to or can not expose their teeth whitening procedure, it is recommended twice a year undergo dental teeth cleaning, which is done in the clinic. With such a large part of the cleaning removed plaque appearing on the teeth over time, and tooth enamel gets its natural color.
It is not recommended to use in the home active chemicals, such as hydrogen peroxide. You risk serious damage to the tooth enamel.