Dental amalgam is the traditional silver-coloured filling we are all familiar with, and is a well-established and inexpensive way to repair tooth damage. Amalgam fillings offer a highly effective way to restore the structure and functionality of a tooth, particularly in the back teeth. This type of filling has been tried and tested for over a century. Although there is mercury in the dental amalgam, when it is in alloy form in the filling, it is perfectly safe.