At OceanFront Dental, most of Dr. Seddon’s fillings do not contain mercury, but some will. While it is true that mercury is a poisonous metal in its elemental state, mercury in dental amalgam is bound in alloy form along with other metals such as silver, copper, and tin. While tiny amounts of mercury vapour can be released during chewing, there is no evidence that these trace amounts lead to health problems. The Canadian Dental Association is confident in the safety of amalgam fillings and the Health Protection Branch of Health Canada does not restrict the use of dental amalgam.