Many people these days are conscious of their oral health and the effect it has on their general wellbeing. Traditionally, metal amalgam (mercury) was the only material of choice for people suffering from dental decay and cavities in need of a dental filling. Concerns have been raised about the use of dental amalgam because it contains mercury. There is an ongoing controversy as to whether having mercury fillings in our mouth poses any risk.
Depending on your opinion you may opt to have tooth coloured dental fillings instead.