I think the bigger problem here is that there are many things that can cause TN an we really don't know all of them.

Mine is viral based and I had definitive proof,,so how can you tell what will set it off and what won't?? What started mine was using an over the counter tooth whitening system that you put the gel in and then wore a plastic tray to keep it on....now it has been a decade but to this day if I use a toothpaste that has a tooth whitener in it my TN flares up terribly.....

So again the real issue is finding out the real causes of this dreadful disorder and finding some real cures,,,,

My hopes go out to all of you