reading the MSDS files from Helioprogress, you can see it does not mention containing any fluoride, while Tetra Ceram and others from Ivoclar Vivadent do. Where did you find out that also Helioprogress does? the website is www.ivoclarvivadent.com and you can see all the MSDS files there.
Diamondlite in its MSDS file mention that it tested for cytoxicity and was negative to fibroblast cellular reactivity test, even tough it mentions that it is X-ray detectable and that therefore contains metals. IS THERE SUCH A TEST AVAILABLE FOR EITHER HELIOPROGRESS or other composites or ceramics from ivoclar Vivadent?
A word about Ceramics, as far I know all ceramics to be such, are aluminum-based and even though it is not an heavy metal but more a light metal, it is still very toxic and proven to accumulate in the breasts and prostate gland and cause all sort of problems
