Respectfully, I would only add that bisphenol-A is found in such a wide variety of materials that come into contact with the general population's foodstuffs and beverages, that the amount present in dental composites is greatly dwarfed in comparison thereto. If a person's only source of BPA is their dental composites, then they are doing an exceptional job of eliminating plastic food & beverage containers from their lives. For most of americans, the relative amounts in dental composites are probably negligible in comparison with other sources.