My 7th set of Invisalign trays have become discoloured. Is this normal, and is there a way to reverse it?

Sorry to hear this, but if you were my patient, I would recommend brushing them vigorously for about 3-5 minutes each, then rinsing them well.  You should then place them into a solution of 50% peroxide and let them soak for about 30 minutes each.  Once you've done that, you should notice an improvement in the color.  If not, I would recommend repeating the steps until you notice an improvement.  Just a note: I usually offer my patients the choice of prescription whitening gel to be used while in Invisalign treatment to make their teeth a lot whiter than when they started treatment.  Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMD

Hi, it does sound unusual. They should normally come out clean with normal wash and scrub. Brite clean should have been enough but still you can try putting then in another solution. Hope the next trays will be fine and its just a matter of few days.