While they call this type of whitening "in-office" whitening, the fact is, this term usually applies to a whitening kit your dentist will have pre-mixed, pre-molded system that you will wear at night for a few consecutive days.

If your dentist
does not offer a in-office laser system, your dentist will probably take a mold of your mouth to create a whitening tray. This tray, along with a hydrogen peroxide based bleach will be sent home with you. The gel will be applied in the tray, and the patient wears the tray for several nights in a row. You should notice results immediately - and in a few days, your teeth will probably be whiter than you've ever seen them before.

Upon your follow

visit to your dentist, he may give you a fluoride treatment, or a special rinse, but in actuality, there is very little follow up to take home tray systems. The results should last several months, and simple one-night touch ups should keep your smile as white and bright as your original results.