Can Tooth Whitening Harm Your Teeth?
Tooth whitening (bleaching) is a safe and successful procedure as long as the recommended materials and clinical protocols for use are adhered to. The currently recommended products contain 10% carbamide peroxide which releases 3.5% hydrogen peroxide. The maximum permitted 21% carbamide peroxide releases 7% hydrogen peroxide.
Until a recent EU Directive limiting bleaching to dental professionals, the prescribing of whitening products was completely unregulated with no controls on the agents used or the amount of peroxide they contained (up to 35%).
This resulted in significant problems with...