My tooth sensitivity was there before the iodine. But I have noticed off and on it seeming worse when on iodine. I figure it's adding some sensitivity by having knocked out of the teeth some of the bad stuff like mercury, etc. So there's micro pores that are empty, which might then allow for sensitivity.
About three weeks ago, after reading about how teeth can be remineralized when saliva bathes the teeth (calcium, phosphorus and magnesium in the saliva from eating), I got to wondering if I could add to this by just allowing a calcium supplement caplets to just dissolve in my mouth, letting it all stay in the mouth as long as I could. I have been putting one or two of my Calcium/Magnesium/Zinc caplets in my mouth between my teeth or the teeth and gums, or under the tongue when I go to bed. I do wind up eventually swallowing much of it, but a lot of it is still powder when I get up in the morning.
Within two days of doing this, I just happened to notice my tooth sensitivity was gone. I wasn't expecting it at all, so it was a pleasant side effect. Also my sleep has changed since doing this. Not really sure if the sleep itself has gotten better, but my dreams have changed (I think for the better). Also, my teeth feel cleaner in the morning once I take a drink to swallow the remaining powder from the calcium. Bowel movements are more regular with doing this also.
Who knows if any of it is being absorbed sublingually or through the cheek tissue, but I think my body is absorbing it better than when I just swallow the whole pill with a glass of water. But my guess is that the calcium and magnesium are filling some of the micro pores that are left empty when Iodine knocks out some of the bad stuff. But don't take that as fact ... I'm only guessing, I'm no dental expert.
So the pluses for me so far are less tooth sensitivity, cleaner teeth, better dreams, and better bowel movements. Only time will tell if better remineralization happens.