CNN is scheduled to air a two-part investigative report with Dr. Sanjay Gupta on June 2 and 3 entitled, “Toxic America.” The report will focus on five chemicals, including Bisphenol A. CNN cites dental sealants as one source of BPA at this link. 

http://www.cnn.com/2010/HEALTH/05/31/chemical.dangers/index.html

The following statement is from the American Dental Association Council on Scientific Affairs.

"According to the CDC, dental caries remains the most common chronic disease of children aged 5 to 17 years—five times more common than asthma (59% versus 11%). Untreated cavities can cause pain, dysfunction, absence from school, and poor appearance—problems that can greatly affect a child’s quality of life. The utility of composite resin materials for both restoring dental health and preventing caries is well established, while any health risks from their use are not. The ADA fully supports continued research into the safety of BPA; but, based on current evidence, the ADA does not believe there is a basis for health concerns relative to BPA exposure from any dental material.”

Bisphenol A and Dental Materials:
http://www.ada.org/1766.aspx

What are dental sealants?

Dental sealants act as a barrier, protecting the teeth against decay-causing bacteria. The sealants are usually applied to the chewing surfaces of the back teeth (premolars and molars) where decay occurs most often.

Dental Sealant Fact Sheet