Pictured above are amalgam fillings that have been replaced by composite fillings at Leederville Dental.
Leederville Dental, Mt Hawthorn 
REPLACEMENT OF AMALGAM FILLINGS
Amalgam fillings, sometimes referred to as silver fillings are made from a metal alloy (or mixture) of metals including silver, tin, zinc, copper and mercury. Mercury can be nearly 50% of the mixture. Whilst considered safe by the Australian Dental Association, amalgam fillings are known to release minute amounts of mercury from these fillings during general day to day tooth functions but the highest amount of mercury exposure from amalgam fillings occurs when they are placed and when they are removed from our mouths.
If your silver fillings are 20 years or older it is good to make an appointment to determine whether or not they are intact and if not replacing them with a non-amalgam restoration can be a good option.
It is important to limit exposure to mercury and so Leederville Dental uses several procedures for the safe removal and replacement of amalgam fillings.
This procedure is done using a ‘Rubber Dam’ as a barrier to catch the amalgam slurry generated in the removal of the old filling. The use of high volume suction is also required. Both these measures minimise ingestion of the amalgam slurry and mercury vapour. All replacement teeth fillings are mercury free.
Make an appointment to examine your old silver fillings and have a conversation about the potential health risks of keeping or removing amalgams here in Perth at Leederville Dental.
Frequently Asked Questions
Why should old amalgam fillings be replaced?
Replacement may be advised if fillings are worn, cracked, leaking or causing discomfort. Amalgam can expand and contract with temperature changes, potentially weakening the tooth and allowing decay to enter beneath the filling.
What advantages do composite fillings offer over amalgam?
Composite fillings are tooth‑coloured and blend naturally with your smile. They bond directly to the tooth structure, preserving more of the original tooth and reducing chances of cracks or sensitivity.
What can I expect during replacement and how long do composite fillings last?
The replacement involves removing the old amalgam, preparing the tooth and placing a bonded composite material. Mild sensitivity may occur briefly. With good oral hygiene and regular dental reviews, composite fillings can last a decade or more.
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