Temporary Abutments for Crown and Bridge Restorations

9 TEMPORARY ABUTMENTS FOR CROWN AND BRIDGE RESTORATIONS FABRICATION OF TEMPORARY RESTORATIONS CAMLOG ® TEMPORARY ABUTMENTS, PEEK PROCESSING Insert the temporary abutment into the implant and rotate until the cams engage with the grooves. Next, the abutment screw is inserted into the abutment and tightened by hand with a screwdriver, hex. Mark the vestib- ular midpoint and the preparation margins on the abutment following the gingival line. Marking can also be performed on a working model with an elastic gingi- val mask. The custom grinding of the temporary abutment is performed extraorally in order to prevent contamination of the surrounding tissue with particles from the grinding. For better handling, the abutment can be mounted on a lab analog or abut- ment collet for the universal holder. A lab screw which corresponds to the diameter must be used for custom grinding. Depending on the marks, the preparation resembles conventional perio- prosthetics. A good solution is obtained with a diamond bur at high drill- ing speed, without water irrigation, and using little pressure. The chamfer or crown margin must lie paragingivally in immediate restorations in es- thetically critical regions, and approx. 1.0–1.5 mm subgingivally for later restorations, to achieve an anatomically favorable emergence profile in the peri-implant tissue. A mark is placed on the vestibular aspect to facilitate detection of the insertion position of the abutment. Temporary abutment insertion CAMLOG ® Lab screws, thread M 1.6 and M 2.0 Trimming the abutment on the lab analog Abutment collet with universal holder Vestibular marking