Dr. Keegan recommends this online article from
Like everything else in life...teeth whitening is also good in moderation.
The not-so-bright side of the teeth whitening industry is that patients continue to turn to online resources to whiten their teeth, simply due to cost. This can be dangerous to their overall oral health, as inexperienced persons will expose their teeth longer than recommended to the whitening solutions or improperly fit the whitening tray to their teeth.
These are not the only dangers, or possible costs...