CEKA ATTACHMENT PART 04.MPG

Описание: Insert the green (M3 size) or orange (M2 size) duplicating dummy together with the space maintainer into the female on the master model. Cover the inclined arm with a thin layer of wax and block out all undercuts. Make sure that the undercut of the duplicating dummy is reproduced in the refractory model (see arrow). Wax up the frame, covering the attachment completely. Cast and fi nish the frame. Use the RE H 20 diamond burr to remove artifacts in the cavity. The RE H 10 carbide burr is a handy instrument to finish the inside of the metal sleeve (the stop will preserve the retentive ledge).
Sandblast the retention part with coarse aluminium oxide; the H 16 (M3 size) or RE H 16 (M2 size) can be used as a holding instrument. Sandblast also the cavity in the frame for improved adhesion of the composite. Assemble the sandblasted retention part with the male spring pin and the space
maintainer and snap this assembly into the female. Mix CEKA SITE and apply it into the frame. Seat the frame and hold for 10 minutes. Remove any excess CEKA SITE and polish the cavity. Be sure to make a new mix of CEKA SITE for each use. The excess material on the mixing pad will not have set up, but the working time will have expired. Lock the threads of the male spring pin with CEKA BOND.

Images by Dominique Behaeghel, Mechelen-Belgium