Metals and alloys play an important role in dentistry. These form one of the four possible groups of materials used in dentistry which include ceramics, composites and polymers. These are used in almost all the aspects of dentistry including the dental laboratory, direct and indirect dental restorations and instruments used to prepare and manipulate teeth. Although the latest trend is towards the "metal free" dentistry, the metals remain the only clinically proven material for long term dental applications.