Gold is known for its low reactivity, meaning it is a safe substance to leave in your mouth for years. Gold fillings are also long-lasting and could stay in place well for over 20 years. However, gold fillings are also ‘indirect’, so they require manufacture in a dental laboratory and then applying to your teeth, making this one of the longer processes.
Porcelain fillings are referred to as onlays or inlays, and are custom-made and then fitted to your teeth. They boast a similar durability to that of gold fillings, but look more more natural.
Silver (amalgam) fillings
Silver fillings are also durable, but due to their noticeable colour are mostly used for treating the back teeth.
Composite resin fillings
Composite resin is a kind of plastic that will match your natural tooth colour, making a filling less visible. The resin mixture can be poured straight into the cavity, making it a relatively quick treatment, if a little less durable than gold or silver.