Abstract
In recent years, along with an increasing demand for the aesthetic mouth, not only the teeth alignment but also the color quality of teeth is growing people's attention. Although a number of teeth whitening after orthodontic treatment have been reported, there is no report on the whitening which can be applied at home even during lingual orthodontic treatment, which can be considered to be very useful.
Therefore, we designed whitening tray that can be used for at-home whitening during lingual orthodontic treatment without removing braces and examined its whitening effect.
