Cone beam computed tomography is a popular name for cone beam image technology. CBCT provides a complete 3D view of the maxilla, mandible, teeth and supporting structures with relatively high resolution allowing a more accurate diagnosis , treatment planning and monitoring and analysis of outcomes than conventional 2D images, along with low radiation exposure to the patient. In dentistry the most common indication for CBCT are evaluation of the jaws for implant , evaluation of teeth for orthodontic treatment , assessment of temporomandibular joint, proximity of wisdom teeth to nerve , evaluation of teeth for fracture or periapical disease and assessment of bone for signs of infection or tumors.