CAD0110

36 I I industry report _ NobelProcera a wide range of materials ranging from aluminium and zirconia-based oxide ceramics, titanium, acry- lics and non-precious alloys. An indispensable factor for long-term clinical success of implant-retained superstructures is the precision of fit. Depending on the complexity of a restoration, poor fit can have a significant impact on function and stability in the oral environment. In terms of reproducible precision, CAD/CAM tech- nology clearly outperforms conventional frame- work-manufacturing techniques. New generation software tools eliminate the need for time-con- suming framework design on the master cast. In- stead, the scan of the implant position can easily be matched with the scan of a wax-up, followed by a virtual framework design in the CAD tool. Adjusting the design and dimensions according to the antici- pated final contour of the definitive restoration is achieved in a few minutes instead of taking several hours with conventional fabrication protocols. _Cost-efficient solutions for laboratory and patient Another aspect of providing cost effectiveness and safety is centralised manufacturing of prod- ucts. Centralised milling evidently outperforms in- house systems: the workflow is permanently moni- tored; industrialised fabrication guarantees con- sistent quality; materials can be ordered as needed for any particular situation, eliminating the need for stock components; and time-consuming and expensive adjustments, updates, or repairs do not Figs. 5a & b_Intra-oral lateral and occlusal view of definitive solutions; the clinical benefit of zirconia products is the application of everyday clinical protocols, including cementation with conventional cements. Figs. 6a–d_Standard clinical protocols apply when restoring natural teeth or dental implants with cement-retained crowns. For long-term success, it is important to position the abutment-crown margin at the level of or slightly below the gingival margin to ensure complete removal of excessive cement. CAD/CAM 1_2010 Fig. 5a Fig. 5b Fig. 6a Fig. 6c Fig. 6b Fig. 6d