The
American Dental Association Council on JADA 2012;143(8):899-902 Scientific Affairs
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The use of
cone-beam computed tomography in
dentistry
An advisory statement from the
American Dental
Association
Council on Scientific Affairs
The American Dental Association Council on Scientific
Affairs
The emergence of
cone-beam computed tomography (CBCT) has expanded the field of oral and maxillofacial
radiology. CBCT imaging provides three-dimensional volumetric data construction
of dental and associated maxillofacial structures with isotropic resolution and
high dimensional accuracy.
A CBCT scanner uses a collimated
x-ray source that produces a cone- or pyramid-shaped beam of xradiation, which makes a single
full or partial circular revolution around the patient, producing a sequence of
discrete planar projection images using a digital detector. These
two-dimensional images are reconstructed into a three-dimensional volume that
can be viewed in a variety of ways, including cross-sectional images and volume
renderings of the oral anatomy.