Methacrylate free bonding agent?

I am considering having my Amalgams replaced with Admira Fushion, which seems to one of the few composites with the no iffy substances or metals (with the exception of BHT) in it. However, all of the glues i have found contain methacrylates in some form (BPA, Bis-GMA etc) and i was wondering if any of you folks knew of a product that is a little bit less toxic?

I have also heard of using bee propolis as a filling/sealant but i cant find much information about it - is something like this viable? Where would i go to learn more? Because it sounds like an ideal solution to the crappy toxic dentistry we all have to put up with in this day and age. Tweet