Can a trip to the dentist poison your kid?

Common tooth sealants expose kids, and anyone else getting fillings, to the toxic chemical BPA. What's a parent to do?

Researchers have discovered that dental sealants contain the toxic chemical BPA (bisphenol-A).
(Image credit: Corbis)

Medical researchers have found that dental sealants contain compounds that, when mixed with saliva, degrade into the mysterious, toxic, estrogen-aping chemical BPA (bisphenol-A) — raising thorny questions for dentists and parents when it comes to preventing tooth decay. Here's a brief guide to the research, the recommendations, and the controversy:

How much BPA are we talking about?

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