In the past, teeth that were affected by cavities and decay were typically treated with mercury (amalgam) fillings that left a noticeable metal appearance to the teeth. At Perth Dental Centre, Dr. Sean McIntosh utilizes what’s known as composite, or tooth-coloured materials in all of our dental filling procedures. A tooth-coloured fillings is completely mercury-free, and once the filling has been applied to the tooth, it strengthens the affected tooth, reduces the risk of developing further damage and it is virtually unnoticeable.