One of the most popular types of fillings even today. It is made of the cold alloy of different metals. Although its poisoning side effect emerges from time to time, according to the statement of the WHO, in case the patient is not sensitive to any of the ingredients contained, amalgam has no harmful effects. Contrary to public beliefs, the amount of mercury dissolved from the properly prepared and set amalgam is by orders less than the amount taken in during regular meals.
Advantage: long lasting solution in case of greater cavities even under the sides of the gums.
Disadvantage: not aesthetic, time consuming, since the amalgam must be polished up for perfect fitting and adequate durability within 24 hours after the filling has been made.