Whitening teeth during orthodontic treatment is an option that every patient should consider. The prevailing notion is that tooth surfaces can only be whitened when they make direct contact with bleaching gel. However, there is evidence that bleaching gel can whiten the entire tooth surface when only limited enamel contact is made.
Hydrogen peroxide in gel form is the principal component of most tray-delivered whitening systems. Also known as a bleaching gel, hydrogen peroxide works by penetrating the enamel and dentin layers of a tooth to break down stains that cause discoloration, allowing the tooth’s natural color of enamel to appear.
It is commonly believed that bleaching gel only whitens the surface of enamel where there is direct contact. However, research published in the American Journal of Orthodontics and Dentofacial Orthopedics challenges this claim, at least as it relates to the performance of an innovative whitening product called Opalescence Trèswhite Ortho.
According to the manufacturer, “Opalescence Trèswhite™ Ortho, is the first pre-filled adaptable, disposable whitening system specifically designed for use with orthodontic brackets. It consists of an Opalescence PF gel solution within a unique double-tray design. The external tray quickly aligns and positions the soft, thin internal bleaching tray. The internal tray comfortably adapts to any bracketed arch. The tray is loaded with an 8% hydrogen peroxide solution which travels through the enamel to bleach behind brackets. The solution actively whitens teeth for up to 60 minutes. The trays contain the optimal amount of gel for easy placement and clean-up. Opalescence Trèswhite Ortho is recommended both during and after orthodontic treatment to achieve a more esthetic outcome. Since Opalescence Trèswhite Ortho also aids in preventing caries and the formation of plaque, treatment is also recommended for improved oral hygiene.”
