[en] An X-ray apparatus for obtaining panoramic radiographs of dental arch and temporomandibular joint areas is described. It is comprised of a column carrying the X-ray source and a camera, both of which are arranged to orbit around the seated patient in a smooth and vibrationless manner. The drive mechanism is performed by a chain or a belt connected to a synchronous step motor and is de-energised whenever the limit positions of the X-ray arc are reached. (U.K.)