While the X-rays involve radiation, the levels are so low that it poses no health risk. It is safe for both children and adults. If your dentist is using a digital X-ray, the risk of radiation is even lower. The patient sits in a chair and the X-ray machine is adjusted well to record the images of the inside of your mouth. There are different types of X-rays to record different views of your mouth such as Bitewing to check cavities, Occlusal to see upper and bottom teeth, Panoramic to check wisdom teeth, etc.