After over 50 years of use, BPA is found nearly everywhere in our environment in a multitude of products. The majority of environmental BPA exposure originates from polycarbonate plastics, epoxy resins and thermal printing paper. These BPA-derived plastic materials are extremely useful for cost-effective, durable packaging and barrier materials. Although most manufacturers’ synthesis procedures minimize unreacted BPA, some traces of BPA will remain in most manufactured dental products. Oral exposure to the limited amounts of BPA that may be released from resin-based materials is far below the limits suggested by governmental agencies and are considered to possess an insignificant risk. Read more.