External bleaching of teeth.

Is one that takes place in the vital teeth whitening product using the outside of the tooth. It is usually done in the office and is supplemented by a home treatment that the patient is done with the indications received by the dentist.
Advantages:
     * Controlled by the professional
     * Minor side effects
     * Increased release and penetration of the gel
You can use different gels that are applied to the teeth, as discussed below, which are based on peroxide cabamida to 35% or hydrogen peroxide to 35%. The gels are recommended for use at home, after treatment at the clinic, are of lesser concentration.