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CAD/CAM - international magazine of digital dentistry

22 I I industry report _ CAMLOG Guide System _A 59-year-old male patient was looking for a new fixed restoration for his maxilla. His case history showed no general disease. The patient had been fitted with telescopic model casting prostheses in the maxilla and man- dible. Owing to the periodontally insufficient an- terior residual teeth in the maxilla (teeth #12, 11, 21 and 22), the prosthesis could no longer be supported. After losing the residual teeth, the patient wanted a fixed implant-based restora- tion of the maxilla. Theresidualteethofthemandibleshowedthe following findings. Tooth #48 was impacted and displaced. Tooth #45 showed mobility (Grade 3) and was periodontally insufficient. The anterior residual teeth #33 to 43 pre- sented with increased probing depths on the canine teeth and increased mobility (Grade 2). CAD/CAM 1_2012 Fig. 1_Panoramic radiograph. The maxillary posterior regions on both sides show significantly reduced vertical bone height (residual height less than 2 mm). Fig. 2_Clinical situation with removable telescopic prostheses inserted. Fig. 3_The facial maxillary sinus wall is moved inwards and becomes the neurocranial floor of the maxillary sinus. On the left side, a vertical bone septum (visible on Fig. 1) requires two separate lateral approaches. Fig. 4_Filling of the right sinus cavity with blood and xenogeneic bone substitute material. Coverage of the lateral window with a resorbable collagen membrane to avoid displacement of the bone substitute material. Fig. 5_Post-op panoramic radiograph shows filling of both maxillary sinus cavities. Fig. 6_Panoramic radiograph with scan prosthesis for determining the fixation positions using the four interim implants. Fig. 7_Two-part temporary implants fitted with ball abutments in positions 11 and 21. Posterior anchorages in positions 15 and 25. Fig. 8_The system-specific matrices are placed and secured in the scan template with plastic. Fig. 9_Fixed ball abutment matrices in scan template. The DVT image is taken immediately with the radiology template mounted. Full-arch reconstruction of the edentulous maxilla with the CAMLOG Guide System Author_ Dr Claudio Cacaci, Germany Fig. 1 Fig. 2 Fig. 3 Fig. 7 Fig. 8 Fig. 9 Fig. 4 Fig. 5 Fig. 6