CHAMPIONSGATE, Fla., Nọvemba 24, 2010 / PRNewswire-USNewswire / - A akụkọ nyocha ọhụụ ọhụụ nke International Academy of Oral Medicine and Toxicology nke ọnwa a nyefere na US Food and Drug Administration (FDA) dọrọ aka ná ntị na mercury sitere na ezé ezé na-eme atụmatụ ime ka 67.2 nde ndị America gafere Nkọwa Ngosipụta Ngosipụta (REL) nke 0.3 ug / m3 guzobere site n'aka US Environmental Protection Agency (US EPA) na 1995. Ọ bụrụ na ejiri REL nchebe karịa 0.03 ug / m3 guzobere na 2008 site na Environmentlọ Ọrụ Nchedo gburugburu ebe obibi nke California, mgbe ahụ ugbu a mma-dose bụ ihe karịrị 122.3 nde ndị America gafere.
