Custom Fit Teeth Bleaching Traysstar rating 5Deb DieterleJuly 14, 2011I just saw the only review on these trays. So, I feel compelled to write a review. I got the trays done 5 + years ago. Worked well for me! I just got a new set made with my dentist this past week. Ultra White's tray is somewhat more sturdy than the dentists. I do need to do some trimming on the dentists tray and the fit with the dentist's tray is a more exact fit. But, that could be because my tray with Ultra White is 5 years old --so, it could be stretched out. I am a picky consumer -- you usually get what you pay for. Check with your dentist -- this is a good deal.