Now to plastic (resin based composite) tooth colored dental fillings, which may have Bisphenol A or BPA as an ingredient. Using the same questions in my last blog entry to decide what is safe: low toxic risk, more exposure early on, chemicals do not stay in your body long term. The difference between chemical exposures in dental fillings or sealants and other exposures to chemicals in cars, food containers, cans, etc. is the amount of exposure. A typical dental sealant is similar in size to a grain of rice. A typical dental filling may be one or a few grains of rice in size, depending on the size of the cavity. In the case of dental care, the exposure risk is tiny, and compared to all of the other sources of exposure (cars, bottles, cans, toys, etc.) is hard to even measure. If you wanted to eliminate plastic from your life, there are non-plastic filling materials, including silver amalgam, gold and titanium. Ceramics (porcelain) can be an excellent choice, but typically plastic resins are used to bond the porcelain onto the tooth. For the record, both of my daughters have resin based sealants on their adult teeth.