Dental radiology has long played exciting and critical diagnostic role in dentistry. Recent decades have seen the development of CT, MRI, Nuclear medicine, and Ultrasonographic imaging modalities that have revolutionized dental and medical diagnosis. The original CT technology, which is used extensively in medical diagnosis, is designated as medical CT (CT) and the newer modality used primarily in dentistry is Cone Beam CT (CBCT). The recent development and application of cone-beam imaging in dentistry provides most of the benefits of CT imaging for many dental appl ications. TI1is article provides an overview of the imaging principles underlying each of these technologies, identifies dental applications, and, in particular, focuses on the emerging role of cone-beam imaging in dentistry.
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