Before using any of the different bleaching methods (home bleaching or office bleaching), a thorough cleaning of all tooth surfaces (professional cleaning) is recommended. This is to remove external stains left by coffee, tea, red wine, etc., for example. Teeth should have no cavities and show no symptoms of gum disease. Please note that fillings or crowns, especially in the area of the front teeth, can't be bleached.
The most commonly used material for bleaching is peroxide. In a chemical reaction, so-called products of decay like oxygen radicals, for example, come into play. Once they penetrate the tooth, they are able to change the pigments of the tooth chemically and produce a lightening effect.
Home Bleaching: After taking an impression of your teeth, a plastic construction/tray for the upper and lower jaw is finished for you, individually, in the dental lab. Following the instructions of your dental hygienist, you can lighten your teeth, until you achieve the desired effect, easily and comfortably at home. Generally, this takes only 30 minutes a day. Because your bleaching tray is individually produced, you can repeat this treatment even at a later date.
In-office Bleaching with Philips ZOOM: After professionally-cleaning the teeth and after covering the gums with a so-called fluid "Cofferdam", the bleaching gel is applied to the teeth in a higher concentration than that which would be used at home. After an individually-variable time of exposure, results become clearly visible. This type of bleaching is definitely preferable in regard to fillings or restorations.
Walking Bleach Technique: This is a process for lightening teeth which have had root canal treatment. Via a small opening, bleach is applied to the tooth. After an individually-variable waiting period, the bleach is removed and the tooth closed with an adhesive filling. The prerequisite for this method is the presence of sufficient root-filling.