” DOUBLE STEP REVERSE ” ( DSR ): A NEW PROTOCOL IN POLYVINYLSILOXANES ( PVS ) IMPRESSION- TAKING PROCESS - TWO CASE REPORTS
Figure 9 . Juxta-gingival finish line preparation for both teeth and retraction cord to highlight the end of the preparations
Figure 10 . The temporary crowns after a direct rebasing
Figure 11 . With a retractin cord into the sulcus , Aquasil Ultimate Wash material is delivered onto the teeth and let set for 3 minutes
duralay posts are transformed in two “ Bio-Hpp ” ( Bredent ) posts . The material is called “ PEEK ” ( PolyEther-Ether-Ketone ) and one of its characteristics is a fact that it has got a Young module very similar to the one of human dentine . ( Fig . 4 ) The two Bio-HPP are tried into the casts to make sure they are tight-fitting and then coated with composite resin ; so as to do that we create a so called “ Post-Crown ” made of a Bio-Hpp core and composite resin on the outer layer . Endoral x-rays are performed for both the models , in order to radiologically evaluate the spaces be-
188 STOMA . EDUJ ( 2016 ) 3 ( 2 )