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The influence of voxel size and CBCT system on the CBCT image quality. (a-d) NewTom VG 0.15 mm group: a sharp border and high signal-to-noise ratio. (e-h) NewTom VG 0.30 mm group, relative clear tooth border. (i-l) VATECH DCTPRO 0.30 mm group: ambiguous tooth border especially on apex, and higher beam hardening artifacts. CBCT: Cone-beam computed tomography.
