Titanium Bases CAD/CAM Crown and Bridge Restorations

12 TITANIUM BASES CAD/CAM FOR CROWN AND BRIDGE RESTORATIONS CAST CONSTRUCTION The framework is modeled directly on the titanium bases CAD/CAM and is prepared with suitable materials in a conventional manner. The instruc- tions of the manufacturers of the materials used must be followed. CAD/CAM FABRICATED CROWNS AND BRIDGE RESTORATIONS A CAD/CAM fabricated crown or bridge restoration can be fabricated as an option. See also "Direct scanning of the titanium base CAD/CAM on the model" on page 10. CAD libraries with the geometries of the CAMLOG ® and CONELOG ® Tita- nium bases CAD/CAM crown and bridge, the scanbodies and a suggested milling geometry, are provided at www.camlog.com . FABRICATION OF A SINGLE CROWN RESTORATION WITH THE MODELING AID After fabricating the cast, the CAMLOG ® or CONELOG ® Titanium base CAD/CAM, crown, is placed in a corresponding lab analog and fixed hand-tight with the corresponding bonding aid. Optionally, the titanium base can also be fixed hand-tight in the lab analog with the correspond- ing lab screw using a screwdriver, hex. The titanium base must be seated in the lab analog correctly. Note that the rotation-locking cam of the titanium base CAD/CAM, crown, should be aligned in palatal/lingual direction. Then a modeling aid is mounted on the titanium base. The single crown is fabricated optionally according to one of the follow- ing procedures: • CAD/CAM TECHNIQUE: The modeling aid is coated with commercially available wax or plastic for creating a wax-up. The wax-up is then scanned to digitalize it and read into suitable CAD software as a three-dimensional dataset for further processing. The thus digitally captured geometry is used in fabricating single crown restorations using CAD/CAM technology. • CAST/MOLD PROCESSING OF THE MODELING AID: Alternatively, casting technology can be used to transfer the wax-up on the modeling aid to a cast framework or molding techniques can be used to transfer the wax-up to a pressed framework. NOTE CAMLOG ® and CONELOG ® Titanium bases CAD/CAM, crown, may not be modified. This would compromise the matched shape to the mode- ling aids.