gutsymama
iodine goes right to teeth and bones - just like fluoride does - so it must be needed to build the matrix of bone. Also I'd wonder if her thyroid wasn't appropriately producing the hormone calcitonin, which puts calcium in the bones/teeth when it rises in the blood.
However, I also think tooth loss is diet related, having collected most of my cavities when I was vegan. See Weston Price and Rami Nagel on that.