Popular dental fillings containing chemical BPA (bisphenol A) have been linked to behavioral problems in children. Fillings made using BPA are becoming more popular because they are teeth-colored, as opposed to the older, silver fillings. This study looked at 543 children between the ages of 6 and 10 for a period of five year who had either received BPA or silver fillings. Children with highest exposure to BPA base fillings were more likely to suffer from anxiety and depression than those with silver fillings. Behavior problems seemed especially common in children who had those fillings on chewing surfaces. This seems to support the idea that fillings on chewing surfaces may begin to break down over time and release their chemicals to other parts of the body. It was unclear whether it was the BPA or other chemicals in these fillings that was the cause of the behavioral change.
In a 2011 related study that looked at BPA exposure from plastics found in some food packaging and canned goods, tied prenatal exposure to BPA with hyperactivity and anxiety in infants. This study found it to be especially true in girls.
It is important not to freak out and have all your child's BPA fillings removed at this point. All studies indicated that more research needed to be done in this area. I would recommend choosing silver fillings for any future cavaties that are located on the chewing surface while we wait on future findings.
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