What are the risks of tray-based teeth whitening?

Tray-based teeth whitening carries no serious risks, but it may cause mild side effects and should be avoided by certain people. About two-thirds of people who use tray-based teeth whitening kits and other teeth whitening products experience mild to moderate tooth sensitivity, according to the American Dental Association. This problem probably occurs because peroxide in the whitening gel penetrates a tooth's exterior and irritates the pulp inside. However, tooth sensitivity usually fades over time. Some people who use tray-based teeth whiteners also develop mild gum irritation, though the problem usually doesn't last long.

Pregnant women should not use tray-based teeth whitening products. Scientists don't know if the whitening agents used in the process can harm an unborn baby.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.