Work Instruction COMFOUR®

20 OCCLUSALLY SCREW-RETAINED PROSTHETICS ON CAMLOG ® AND CONELOG ® BAR ABUTMENTS CAST FABRICATION WITH IMPRESSION CAP FOR BAR ABUTMENT, CLOSED TRAY, FOR BRIDGE AND BAR RESTORATIONS To fabricate the cast, an impression cap corresponding to the diameter is screwed hand-tight to the bar lab analog and positioned in the impres- sion. The impression is cast with suitable model material and the combination of bar lab analog/impression cap may not loosen. After curing, the impression is removed and the impression cap unscrewed from the bar abutment lab analog. TIP: We recommend that you fabricate the cast with a gingival mask. The surrounding gingiva is represented true to the situation, particularly for subgingival crown margins and restorations in esthetic areas. An op- timal design of the crown contour is easier to achieve. Impression cap for bar abutment Bar lab analog CAST FABRICATION WITH TITANIUM CAPS FOR BAR ABUTMENTS FOR CROWNS AND BRIDGES Following impression taking, the titanium cap for bar abutments remains in the impression material. In the dental laboratory, the titanium cap is at- tached to a corresponding bar lab analog (note proper seating). Light blue anodized screws, hex, in various lengths are available for fixation of the cap with the bar lab analog. See also information on screw thread sizes M1.6 and M2.0 on page 9. Screw, hex, for bar abutment, for open tray impression taking and soldering, can be shortened extraorally by 2.5 mm, titanium alloy (Ti6Al4V ELI) Length 10 mm 15 mm 20 mm Thread M1.6/M2.0 M1.6/M2.0 M1.6/M2.0 ART. NO. J4012.1610/2010 J4012.1615/2015 J4012.1620/2020