I managed to get rid of a lot of the more severe stains, but before I could finish the bleaching
process, I needed some crown work and the teeth
were too sensitive to continue bleaching until they were capped with permanent crowns.
Well, the trays are a bit loose now and the bleach washed out near the gumline. I can't afford to have new trays made so, after experimenting a bit, I've discovered I can seal trays at the gumline by plastering chewed gum over them.