Are any of the over-the-counter whitening products effective?
To my knowledge, only one is research proven at this time. Crest white strips are safe and effective when one follows the manufacturer’s instructions. They are most effective when used on straight teeth as the strips don’t bleach in-between the teeth as effectively. Also, the white strips only cover the front 6 teeth as compared with a custom fabricated tray made in the dental office which includes all the teeth in the arch. Other over-the-counter whitening products are not very effective and are primarily sold due to marketing, not results, in my opinion.
