That's exactly what I'm saying, yes, there are differences in the types of fluoride but NONE of them are very good and I'm sure that some poisons are OK in smaller doses (somebody mentioned iron), this is something that's needed by our bodies in some amount indicating that our bodies eliminate iron over time. A high percentage of our LIFETIME FLUORIDE INTAKE is never eliminated by the body, it resides in the bones, teeth and brain - bound to calcium and aluminum etc.
All one really needs to do is think about it... I can be persuaded to do many things but drink rat poison, or smear it all my teeth and tongue, is one thing I will not do. sorry'