While bio or BPA free fillings are already well known in Western Europe and America, here in Slovenia they are still a fairly unknown area and a puzzle for both patients and dentists. Many of us love the discreet white fillings that white composite fillings and other non-metallic fillings provide, but most of us don’t realize that these more aesthetically pleasing options likely contain a health-damaging chemical known as Bisphenol A or BPA. BPA is a chemical found in plastics that has been linked to health problems. Just like mercury fillings, which release trace amounts of mercury into the bloodstream over time, scientists have confirmed oral enzymes that release BPA into the bloodstream from composite dental fillings.