Amalgam (dentistry) exposure", studies on whether there exist "potential gender differences" or "genetic basis for sensitivity to mercury exposure." The removal of amalgam fillings is not recommended for reasons other than a true hypersensitivity to mercury. Mercury levels in blood and urine have been shown to rise for a short period of time following the removal of amalgam restorations and no studies have demonstrated any health gain from restoration removal. Removal involves exposure to mercury vapor released during the removal process. Amalgams also contribute to mercury toxicity in the environment. With regards to amalgam placement and removal in pregnancy, research has not
Dental amalgam controversy they contain Bis-phenol A (BPA) a chemical known to cause reproductive toxicity at high doses. In Canada, amalgam use is considered safe and effective. A 2005 position statement from the Canadian Dental Association (CDA) states that "current scientific evidence on the use of dental amalgam supports that amalgam is an effective and safe filling material that provides a long-lasting solution for a broad range of clinical situations. The CDA has established its position based on the current consensus of scientific and clinical experts and on recent extensive reviews of strong evidence by major North American and international organizations, which have