If you feel ok with it, you might be wise to stick with it, because no matter what you get, one chemical/metal is always replaced with another. On my serum test form, Xeno shows to be ok with me, yet apparently I am sensitive to flouride....but I am unsure that it's the worst of things and I don't believe it is (if it's minimal).

It really is up to you, because I don't think anybody has the perfect answer for each person. I've had materials that have contained fluoride and I don't know if they made much difference to any other dental material I used.

I know that heliomolar supposedly contains fluoride, yet a biologic dentist in Aussie that I was in touch with uses this as his main composite for patients, because he said it would seem this one was the least reactive (he is also trained in oral toxicology and biocompatibility). In his experience, it seemed to be the most reliable, both mechanically and generally "sensitivity" and biocompatibility wise.

I think it is very hard to sort out which is best for different people. Fluoride is FAR from the only toxin you'll find in these materials. I think it's a case of how much of it is in there, how much of it is going to be released over its lifetime, how sensitive you are to it, how much you are getting overall, immune status, overall toxicity, etc.