Dental materials including dental glass ionomer restorative materials, dental amalgams, substances for taking dental casts, dental cements, dental phosphate cements, dental silicic cements, pastes for dental dressings, cements and porcelains for the manufacture of dental settings, dental restorative materials, composite dental restorative materials, materials for stopping teeth, dental wax, dental amalgam alloys, dental amalgam alloys in bulk form, tablet form and encapsulated form, mercury for the preparation of dental amalgams, dental gallium alloys, dental capsules for preparation of amalgams, mercury hygiene preparations, amalgam bonding materials, dental adhesives, dental pit and fissure sealants and dental impression materials