Written by therepublic.com Tuesday, 21 December 2010 16:37
Dental sealants, the popular, thin plastic coatings applied to the grooves of teeth, can reduce tooth decay in children by more than 70 percent. While highly effective, sealants pose concerns: they’re made with bisphenol A (BPA), a controversial and ubiquitous synthetic chemical that in low doses has been associated with changes in behavior, prostate and urinary tract development and early onset of puberty.
So far, experts strongly recommend sealants based on their proven benefits and the brief exposure to BPA, which can be minimized by taking certain steps in the application process. At the same time, however, there are gaping holes in the data, including the “quality and quantity of BPA absorption,” according to a review of the literature recently published in the journal Pediatrics.