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ePaper created 2018-02-16, 11:17:41 | version 1.38.0
dynamic navigation cone beam supplement | Fig. 19 Fig. 20 Fig. 21 Fig. 22 Fig. 19: Computer-guided navigation enabled the implants to be placed reliably and predictably within optimum bone, without the need to reflect a flap. – Fig. 20: Sulcus formers prior to fitting of the final restorations. – Fig. 21: The gingival tissue after removal of the sulcus formers. – Fig. 22: Custom-made Atlantis titanium abutments fitted to the implants. – Fig. 23: Linked Lava zirconia crowns after cementation. – Fig. 24: Post-restoration radiograph. Fig. 23 Fig. 24 commenced (Fig. 6). Using computer-guided sur- gery, the pathway of the drill could be followed clearly on the computer screen positioned in front of the patient (Fig. 7). Approximately 1 mm of bone was left intact in the upper right first molar site ready for the sinus lift. Navident provided visual confirmation of the position of the drill tip to accurately gauge the correct depth (Fig. 8). Prepa- ration continued using a 3.5 mm drill bit, which, again, was calibrated and verified before use (Figs. 9 & 10). A 3.5 mm diameter and 8 mm length Dentsply Ankylos C/X implant was placed 1 mm subcrestally in the upper right second premolar site. A guide pin was placed in the upper right first molar site to check the depth and alignment (Fig. 11). The NaviStent was removed and the site was prepared for the sinus lift osteotome (Figs. 12 & 13). The osteotome was tapped gently with a surgical mallet until the remaining thin layer of bone infractured and was elevated (Fig. 14). The Schneiderian membrane was carefully raised through manipulation with the CAD/CAM 4 2017 45