The dental computed tomography (CT) or computed tomography (CT) is a method that uses a beam of low intensity x-rays to produce images of precise sections of the profile of the mouth. The TAC is operated by a x-ray tube rotates around the patient. The information collected is processed immediately in a computer or a software program generates three-dimensional images of the upper and lower jaws. This system offers a more faithful and accurate diagnosis, since millimeter by millimeter to analyze the patient's anatomy. This displays pathologies that are not detected with a panoramic radiograph or accurately plan implant placement without surgery.