| Z CAD / Switzerland, the 3D CAD-CAM designed Zirconia porcelain crowns / bridges  (Metal FREE ceramic, but strong as metal)
                  
                
                
                   Over the past  several years, dentists have been driven to provide more esthetic and desirable  anterior full or partially covered anterior restorations to meet the desires of  our patients. This is especially true for the multi-unit anterior or posterior  bridge. The problem has always been to achieve both strength and esthetics. The  porcelain-fused-to-metal crown certainly provides durability with some  reasonable esthetics for crowns. And you would not consider anything but a PFM  bridge, be it posterior or anterior. However, with the increasing esthetic  demands of our patients, even the best PFM crowns and bridges appear too bulky  and opaque. And no matter how well they are fabricated, it is only a matter of  time before some metal starts to show, and in the anterior this is completely  unacceptable. 
                         
                  To alleviate this problem, new materials were  provided and laboratory techniques developed to produce an all-ceramic single  restoration that was highly esthetic. In fact, the esthetics they were using  created restorations that were indistinguishable from natural teeth. Thus, the  challenge now is to fabricate an esthetic but durable all-ceramic that has wear  characteristics favorable to the opposing dentition, and is available for  anterior or posterior  multi-unit  bridges. 
                   
                    New Technologies, New  Materials  
                   
                     The  fabrication of all-ceramic, esthetic, and durable anterior crowns and bridges  is made possible through the combination of new technology and new materials.  The new technology is CAD/CAM, computer aided design/computer aided  manufacturing. It fabricates an all-ceramic (Zirconia) framework that is not  only very thin, light, and durable, but also available in various tooth color  shades that improve the life-like esthetics of the final restoration.  
                   
                   
                   One of the newer  materials, Zirconia (ZRO2)—an oxidized form of the Zirconium metal—is able to  resist high-stress areas internally, such as sharp line angles in the tooth  preparation, grinding damage during internal adjustment, and stresses generated  by chewing or thermal changes in the mouth. In addition,  transformation-toughening gives Zirconia excellent mechanical properties: high flexural  strength—900 Mpa to 1.2 Gpa—and toughness—7–8 MP.M a –0.5  
                   
                   
                    You'll want to look at it  again and again. 
                     
                    When we talk  to each other, our gaze falls often on the mouth. In this, we naturally focus  particularly on the teeth and paying increasing attention to their appearance.  In daily contact with people, flirting in private or presenting yourself for a  new job, beautiful teeth play a big part in helping you look great. With 3D  CAD-CAM designed Zirconium smart ceramics, all restorations can be shaped so  naturally that they cannot be distinguished from your real teeth.  With the 3D designed Zirconium smart ceramics, our new  high-tech all-ceramic material, this wish can now be fulfilled. Zirconium smart  ceramics offers extremely natural aesthetics paired with excellent  biocompatibility.  
                   
              In the past, the traditional methods for making crowns and bridges involved a series of dental appointments and final fabrication of the restoration by a dental laboratory. Today CAD/CAM allows us to custom-fabricate any of these in the office and cement them in place much faster and more precise.
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