Interesting...
Here in Germany -
fluoridated salt consider to be table salt. That reason we have fluoridated salt is because we have very low to no fluoridate in water. Germany banned water fluoridation that's why we need fluoridated salt as replacement to protect against caries.
The public resturants, canteen, etc at everywhere use fluoridated salt as table salt. I remember back at around 1988 time, we went health class about type of breads etc. The man from Public Health Department told us that every bakery are obligate to add iodine to fluoridated salt in breads, cakes, etc.
It's not just salt but teethpaste, too.
I have for my family is fluoridated salt and also to mix with dried herbs, too but my boys prefer iodine salt, I used so I buy fluoridated salt in iodine for them, of course me, too... We have type of salts in every stores here in Germany... Many are alway add fluoridated in when they decide to pick sea salt, iodine salt, herb salt, etc.
I will be back for provide the link later.