Bisphenol A

Bisphenol A (BPA) is widely used in the manufacture of many consumer plastic products. BPA is used in the manufacture of products such as hard polycarbonate water bottles, some baby bottles, and the lining of food cans and bottle tops. There is also evidence that some dental sealants, and to a lesser extent dental composites, may contribute to very low-level BPA exposure.

Some scientific studies have suggested that BPA, like soy and phthalates (chemicals added to plastics to increase flexibility and durability), may affect reproduction and development in animals by mimicking the effects of the female hormone estrogen. This has raised concerns about its safety. To date, these effects have not been observed in humans, and are questionable at the exposure levels resulting from consumer products.

The ADA believes any concern about potential BPA exposure from dental sealants or composites is unwarranted at this time. When compared with other sources of BPA, these dental materials pose significantly lower exposure concerns.