Over-the-counter products have the potential to whiten the teeth, but these products are vastly inferior to professional teeth whitening performed at the dentist’s office. The main differences between in-store and in-office bleaching are the properties and percentage of the peroxide tooth bleaching solution, and custom trays made in house. In-store tooth bleach is weaker and therefore not as effective in removing stains. We fit you with a custom tray, which enables the bleach solution to reach the crevices of your teeth which would otherwise be missed by whitening strips. As well, custom fitted trays pose less risk of leakage of the bleach solution to the surrounding tissues which can cause irritation.