CAMLOG Hybrid Restorations

28 HYBRID RESTORATIONS WITH THE CAMLOG ® IMPLANT SYSTEM FABRICATION OF THE BAR CONSTRUCTION CAST BAR CONSTRUCTIONS Various bar bases are available for bar fabrication using casting technology: FULL CASTING TECHNIQUE BASE FOR BAR ABUTMENT, BURN-OUT Fabrication of a cast bar construction with prefabricated bar base made of burn-out plastic (POM) for full casting technique. A prosthetic screw for bar abutment (hex) based on the diameter is used to attach the bar base to the CAMLOG ® bar abutment. CAUTION To avoid deforming the bar base, only tighten the prosthetic screw lightly by hand. The bar base can be shortened occlusally to the height of the screwed pros- thetic screw. The overall height of the base is 14 mm. EXAMPLE: WORKING CAST WITH CAMLOG ® LAB ANALOGS (TITANIUM ALLOY). WAX-UP The bar wax-up is created based on the planning on the burn-out bar base directly. The wax thickness over the plastic coping should be at least 0.3 mm. Do not cover the delicate edge of the base with wax. Prefabricated bar com- ponents made of wax / plastic can also be used to fabricate a pre-milled bar construction. IMPORTANT NOTE When burning out the casting muffle, swelling may occur due to the thermal expansion of the plastic and damage the investment compound in the area of the plastic base. This can cause investment compound to be included in the casting metal. Therefore, a minimum wax thickness of 0.3 mm should be applied to the plastic base. When heating, the wax softens first and gives the plastic enough space to expand. Example: Milled bar construction Base for bar abutment, burn-out, with prosthetic screw Screw-retained base on the CAMLOG ® bar abutment BAR RESTORATIONS