Spring 23 www.nvda.org 15 Featured Article Figure 3, Bone defects seen in CBCT 360 degree rotation alveolar crest, and alveolar cortical plate, and what parameters play a role in improving the images without causing burn-out of thin cortices? In advanced modalities such as CBCT, higher definition and smaller voxel size are needed, resulting in increased milliamperage and kilovoltage values.2-4 Small voxel sizes create images with high diagnostic results that can detect several minute changes such as root fractures and missed canals.5 Voxel size is associated with the spatial resolution of an image. In general, the smaller the voxel size, the better the results for both the resolution and sharpness.6 The larger the field of view (FOV) the greater the amount of scatter in the image. Mol7 reviewed the more advanced digital technologies, such as tuned-aperture computed tomography (TACT), digital subtraction, and conventional CT scanning, and stated there is a potential for an increase in diagnostic efficacy and classification of the periodontal bone status. He also evaluated and outlined the practical limits of these technologies and explained in which arena these technologies will be particularly useful in the practice of dentistry.7 Vandenberghe and co-workers8 studied periodontal bone architecture using 2D charge-coupled device directors (CCD) and 3D full-volume CBCT-based imaging modalities. They assessed the periodontal bone » Figure 4, CBCT seen by 180 degree rotation
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