How Long Should Whitening Trays Be Worn for the Best Results?

Tooth sensitivity is the number one side effect of bleaching.

The Longer the Better

Bleach with a 10-percent concentration can be worn for a minimum of two to four hours, but if you're looking for quicker results, animatedteeth.com recommends wearing the whitening trays overnight while you sleep.

Limit Bleach Time

If you've never whitened your teeth before, dentist.net recommends only wearing bleaching trays for 30 minutes to one hour.

Bottom Line

The longer you wear the trays, the more likely you'll experience side effects, including tooth sensitivity. While it may take longer to bleach your teeth, you'll experience fewer side effects if you limit your bleaching time.

References

• Animated Teeth: Tray Teeth Whitening