The average amalgam or silver filling lasts about 10 years according to research studies. Although I have seen amalgam (silver) fillings lasts up to 25 years in practice. The amalgam filling material is not bonded to the tooth. The amalgam filling is closely adapted to the walls of the remaining tooth structure but leaves microscopic gaps. As the amalgam filling corrodes around the edges, decay may develop in these areas.
In addition to the amalgam filling corroding, it may also expand as it ages causing further breakdown of your tooth with cracks. Some cracks can be minor but others can destroy the tooth and result in tooth loss.
It is your dentist’s responsibility to check your teeth and let you know when any restorations need replacement.
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