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cone beam international magazine of cone beam dentistry

I case report _ dental implantology placement, as readjustment during the operation can be quite difficult, if not impossible. In order to provideameasureofsafety,twotemporaryrestora- tions were fabricated for this particular procedure. The first was produced digitally. The implant planning data was exported as STL files from the SIMPLANT software and imported into the CAD software (exocad DentalCAD; Figs. 33–36). The restorationwasthendesignedinexocadDentalCAD based upon the location of each implant and abut- ment, and the diagnostic wax-up. Once the design process had been completed, the CAM process was completed on a CNC milling machine, which milled the restoration from a solid block of PMMA (Figs. 37 & 39). As with most milled restorations, the restoration was not en- tirelyfinishedwhenremovedfromthemillingma- chine but required only a few additional manual steps for completion (Fig. 40). The holes intended to receive the abutment cylinders were designed for cement space of approximately 1 mm to en- sure a passive fit. The screw channels were all opened occlusally (Fig. 39). Enamel and transpar- ent composite material were applied to the milled teeth to add a hint of mamelons, enhancing the Fig. 37_The milled PMMA temporary restoration. Fig. 38_The palatal view of the PMMA temporary restoration. Fig. 39_The abutment cylinders included cement space of approximately 1 mm so that the temporary restoration could be inserted directly after the operation. Fig. 40_The dental technical working steps are reduced to minimal manual finishing. Fig. 41_The aesthetically enhanced temporary restoration. Fig. 42_A comparison of both variations: both the same size but the right-hand piece of work had far greater stability. Fig. 43_A comparison of both variations: aesthetically no difference was noticeable. Fig. 44_The clinical situation before the operation under general anaesthetic. Fig. 45_The sterile surgical guide for implantation. Fig. 46_The situation after extraction of the teeth. Fig. 47_The open gingival flap. Fig. 48_Positioning the SIMPLANT SAFE guide on the edentulous bone. Fig. 49_Drilling according to the instructions from SIMPLANT. Fig. 50_Placement of the implants (ANKYLOS C/X) alternately 20 I cone beam2_2014 Fig. 41 Fig. 40Fig. 39 Fig. 38Fig. 37 Fig. 43 Fig. 42