Apparatus for x-ray photography of the area of the dentition and of the

Abstract

An apparatus for panoramic X-ray photography of the area of the dentition and the jaws, comprising a frame part, a bearing part linearly movable in relation to the frame part, and a support arm attached rotatably to the bearing part, the arm having at one end an X-ray film and at the opposite end an X-ray source. The movements of the bearing part, the support arm and the film are synchronized in such a way that an image of an area of desired shape, e.g. the patient's dental arch, is obtained on the film. The invention provides a possibility, without shifting the patient, of altering the enlargement and, additionally of tilting the X-ray beam a desired angle in relation to the horizontal, whereby e.g. teeth oblique in relation to the vertical can be photographed more sharply. The support arm is attached to the bearing part through structural parts provided with guides extending in the longitudinal direction of the support arm, and with transfer means, so that the support arm, with the source of radiation and the X-ray film, can be transferred in a direction parallel to the X-ray beam. Furthermore, the said structural parts also have curved rails cooperating in order to effect tilting of the support arm. The movements are effected by stepping motors.