Can teeth whitening hurt your teeth?

Teeth whitening methods have been implemented and evaluated for decades. Millions of people use teeth whitening products. In fact, cosmetic teeth bleaching is forecasted to be a $3.8 billion global industry by 2021. The American Dental Association (ADA) states that safe and effective teeth whitening options are available for both in-office and at-home applications and over-the-counter (OTC) treatments. However, several minor side effects are sometimes associated with teeth whitening. These include gum irritation, tooth sensitivity, and impact on dental restorations.