May 4, 2011 (Ian London, Editor -- Modern dentistry can be quite the marvel, especially with respect to observing rare metal material science at work. These metals enable the latest diagnostic technologies, as well as faster, smaller, and quieter tools. In a modern dental office, rare earths and rare metals are also found in LED lamps, flatscreen display units and film-less X-ray techniques. Material science is also contributing to significant advances in prosthetics, be they crowns, veneers or implants.