Aim: For a standard of care for diagnosing and treatment planning in dentistry, two-dimensional (2D) imaging modalities such as cephalometric, panoramic, and periapical radiography are used since decades still there are some questions left unanswered in oral diagnosis and treatment planning. Thus, evolution toward three-dimensional technology was desired and cone-beam computed tomography CBCT was introduced. Background: As an alternate to standard CT using either spiral-scan geometries or fan beam, the cone-beam geometry was developed to supply more rapid acquisition of knowledge of the entire field of view (FOV) and it uses a cost-effective radiation detector. Results: Cone-beam computed tomography use should be based only on the diagnostic information needed as it has improved status of diagnosis and treatment planning of patients. Conclusion: The CBCT studies are easier to perform in dentistry if compared with a full-mouth series of radiographs, or in fact even a panoramic radiograph with bitewings and selected periapical images. Clinical significance: Cone-beam computed tomography used in various fields of dentistry should be depending upon the case and diagnostic information required.