PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
Discussion of dental X-ray results. Dentist showing a patient an X-ray image of her teeth. Dental fillings and caps are seen on the X-ray (upper right). The X-ray was obtained by placing a digital X-ray detector inside the patient's mouth. X-rays are then passed from the X-ray machine through the patient's teeth to be recorded by the detector. This allows the diagnosis of dental conditions, such as cavities, in a localised area and without the excessive use of X-rays. This digital system, manufactured by Sirona, uses CCD (charge-coupled devices) to detect X-rays, instead of photographic film. This produces a more detailed picture. Photographed in the UK.
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