1. The closest thing I've ever see to this would be tooth whitening products. Otherwise, I'm really not sure if any such thing exists. ie, is Miracle-Mineral-Supplement actually concentrated enough to bleach anything?
2. The closest thing I was able to find on this was a study aimed at observing the effects of "Sodium Chlorite (or chlorate) in man". Which included observations on the effects of Sodium Chlorite exposure in humans. Beyond this, I don't think I've ever seen anything to cover the risk and interactions associated with Miracle-Mineral-Supplement ingestion.
3. Lots of people claim that Miracle-Mineral-Supplement is an effective parasite treatment. Though I can't comment on this myself as I have no personal experience on this personally.