Dental amalgam controversy from July 2018 onwards, the EU Mercury Regulation prohibits the use of dental amalgam in children under 15 years old and pregnant or breastfeeding woman. Additional requirements include the use of pre-encapsulated mercury and ethical disposal of waste amalgam. The British Dental Association (BDA) has worked with the Council of European Dentists (CED) to prevent an immediate ban of amalgam until further research into practicalities has been undertaken. The European Commission will report to European Parliament by June 2020, and to the European Council by 2030 regarding the viability of ending dental amalgam use by 2030. Dental amalgam controversy This
Chemical element or an electrophile; similarly "Nu" denotes a nucleophile. "L" is used to represent a general ligand in inorganic and organometallic chemistry. "M" is also often used in place of a general metal. At least two additional, two-letter generic chemical symbols are also in informal usage, "Ln" for any lanthanide element and "An" for any actinide element. "Rg" was formerly used for any rare gas element, but the group of rare gases has now been renamed noble gases and the symbol "Rg" has now been assigned to the element roentgenium. Isotopes are distinguished by the atomic mass number (total protons and