Dental amalgam effect on children

A study confirmed that the mercury in dental fillings do not alter brain development of children, as some believe.
The silver amalgam has been used for a century to fill cavities. These fillings consist of a combination of metals, including mercury. Some studies showed that release small doses of mercury vapor.
Mercury poisoning damages the central nervous system and kidneys, and some specialists are concerned that exposure to low levels of this metal in amalgam affect children's health.
A team of researchers from Portugal and the United States-controlled to 507 children between 8 and 12 years who had amalgam fillings or resin. For seven years, there were no differences between groups in the incidence of neurological symptoms such as tremors, impaired vision or hearing, and disturbances in coordination.

The results are joining the evidence of two other recent works, including one conducted on the same group of children found no evidence that amalgam damage to the intellectual development or behavioral.
A panel of experts noted that although there is evidence that these fillings are safe, more studies are needed on some questions that have no answer, like how much amalgam in pregnant women might affect fetal development.
Some consumer groups, dentists and lawmakers believe it is necessary to prohibit the use of amalgam. The American Dental Association (ADA) maintains that scientific evidence indicates that the fillings are safe and which should be kept as an option for patients.