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ePaper created 2018-02-16, 11:17:41 | version 1.38.0
dynamic navigation cone beam supplement | Fig. 4 Fig. 5 Fig. 6 NaviStent is quick, easy and takes place chairside, using a unique thermo-plastic material which is moulded directly onto the patient’s existing denti- tion. The NaviStent is designed and fabricated to en- sure a high level of stability, while providing unre- stricted access to the planned implant sites. The scan was taken with a Morita 3-D CBCT sys- tem, which provides high definition, distortion-free images for accurate diagnosis and planning. Radio- graphic and CBCT examination revealed approxi- mately 9 mm of bone depth, from the crest of the ridge to the floor of the maxillary antrum, in the up- per right second premolar site, and no more than 5 mm bone depth in the first molar site. Planning took place immediately after the scan, with the pa- tient present, so she could see the proposed treat- ment on the Navident software. She felt reassured by the care being taken to achieve optimum implant positioning, with minimal risk of potential compli- cations, and was extremely impressed with the technology. The Navident planning software allowed the place- ment of the implants to be restoratively driven. The size, shape and position of the intended crowns was Fig. 4: Calibration of drill axis. Fig. 5: Calibration of pilot drill tip. Fig. 6: Preparation of upper right second premolar implant site. Fig. 7 Fig. 8 Fig. 7: The pathway of the drill could be followed clearly on the Navident computer screen. – Fig. 8: Navident provided visual confirmation of the position of the drill tip to accurately gauge the correct depth. – Fig. 9: Calibration of 3.5 mm drill tip. – Fig. 10: Preparation of premolar site with 3.5 mm drill. Fig. 9 Fig. 10 CAD/CAM 4 2017 43