I would disagree with the article. Instead I would write numerous studies proving the danger of mercury Amalgam fillings have been ignored. There are journals collecting dust with articles about the hazards of mercury fillings in sheep, monkeys, norway brown rats, mice, and people.
People guessed rather than tell the truth.
Based on studies that mercury is a neurotoxin and might cause minor to serious health problems in many individuals Sweden and Germany enacted legistlation against the use of Amalgam fillings. Norway recently issued this statement against amalgams: