Composite resin is more than just a tooth colored alternative to amalgam (silver fillings). It is also metal-free and mercury-free. Instead, the material is made up of a mixture of plastic and fine particles of glass. Some patients have expressed concerns regarding BPA exposure, but composite fillings are generally considered safe. The amount of BPA that may be in composite resin is negligible and much less than most people are exposed to in other plastics. If you do have concerns over the materials in composite fillings, please do not hesitate to speak with us.