I will do some research on this today and get back with my findings. Personally, I don't see how Iodine would whiten teeth, but perhaps there is another component to the hulls, or the combo of several that is responsible.
Any questions like this are so welcome as I am a Naturopathic student and using my time here on curezone as part of my training.
For my dissertation I am focusing on Morgellon's, so anyone directing me on good research pertaining to this disease would be most appreciated!!!