Material choice for restorative dentistry: inlays, onlays, crowns, and bridges.Gen Dent. 2006 Sep-Oct; 54(5):310-2.GD
New materials--specifically the new CAD/CAM zirconia-based systems--are available now for restorative dentistry. When esthetics are not a factor, gold remains the standard, particularly for intracoronal restorations and full posterior coverage. Tooth-colored crowns made with zirconia are new and offer great promise for the future, although more long-term in vivo studies are necessary.