Porcelain-Fused-to-Metal and All-Ceramic Crowns for Posterior Teeth: Material science and Laboratory Procedures
نویسنده
چکیده
QDT 2013 Over the last decade, laboratory procedures have changed dramatically due to the introduction of computer-aided design/computerassisted manufacture (CAD/CAM) technology. This evo lu tion began with the use of zirconia as a base material for dental restorations. Recently, the use of CAD/CAM-fabricated full-contour zirconia (FCZ) crowns for posterior teeth has become a popular restoration option among large commercial laboratories. In contrast, porcelain-fused-to-metal (PFM), pressed lithium disilicate (LD), and porcelain-fused-to-zirconia (PFZ) crowns remain popular among smaller laboratories. This article compares these four restoration types based on their material science and laboratory procedures.
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More than forty years after their development, porcelain-fused-to-metal (PFM) restorations remain the clinical standard to which other esthetic dental materials are measured. One of the drawbacks of PFM restorations is the difficulty with making them appear lifelike when viewed adjacent to natural teeth. All-ceramic restorations have become a welcome addition to the restorative armamentarium as...
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