Teeth whitening trays are a type of at-home bleaching treatment, They work by holding a whitening gel against your teeth for a specific period of time. The gel typically contains carbamide peroxide, which releases into the tooth enamel. This oxygen breaks down the chemical bonds of stains and discoloration, which makes your teeth happier whiter.

Custom-made trays ensure a snug fit for even applications and reduced gum irritation, where the one-size-fits-all trays often fit poorly. Allowing gel to leak. Consistent and even whitening is more predicable when using custom-made trays.

The frequency and duration depends on the gel’s strength. A lower concentration (16% carbonide peroxide) may be worn several hours per day or even overnight. After the initial treatment, you can perform touch-up sessions as needed, typically every six months.

The most common side effects are temporary tooth sensitivity and mild gum irritation. The tooth sensitivity usually disappears within a few days of stopping treatment. Gum irritation can occur if the whitening gel leaks out of the tray and comes into contact with your gums. Poorly fitting trays can cause uneven application of the gel, causing a blotchy appearance.

No, Whitening gel only works on natural tooth enamel. Any dental restorations, like crowns, veneers, and fillings will not change color. If you want to match your restorations to your new tooth shade they might need to be replaced.

To ensure the best results, be sure to avoid eating, drinking, or smoking while wearing the trays. Avoid highly pigmented foods and drinks like coffee, red wine and berries for at least 48 hours to prevent new stains from setting in.