Estimating and comparing the radiation cancer risk from cone-beam computed tomography and panoramic radiography in pediatric and adult patients INTRODUCTIONIn recent years, cone-beam computed tomography (CBCT) devices have increased in dentistry departments to optimize the diagnoses and treatments (1) . As compared with traditional radiographs such as panoramic, CBCT supports a wide range of applicability including 3D image quality and has accurate diagnosis of skeletal asymmetry, easier location of impacted teeth, improved surgical planning, and increased detection of pathologies placing (2)(3)(4) . Its benefits have been widely reported, however, CBCT scans have poor soft-tissue contrast and artifacts, and also expose the patient to biologic risks of ionizing radiation (5)(6)(7) .The amount of patient exposure dose in diagnostic dental CBCT examination remains an important issue. Several studies have demonstrated that CBCT's have higher radiation