Abstract: An X-ray device for generating a panoramic tomogram is designed so that a revolving arm can move between a first position, where an X-ray generator and an X-ray receiver that are both supported by the revolving arm oppose each other through the head of a patient positioned in a patient positioning station, and a second position, where an operator of the X-ray device can look at the patient's head from a side view, thereby allowing the operator to properly position the patient in the patient positioning station. The incorporation of a second X-ray receiver additionally allows for the generation of a cephalogram. The incorporation of a blind prevents the patient from visually or physically interacting with selected components of the apparatus.

Abstract: An odontotherapeutic hand piece is formed of a head portion, a handle portion connected to the head portion and a coupling portion arranged in continuation with the handle portion. A rotary member provided with turbine blades is accommodated in the head portion. The odontotherapeutic hand piece has a working medium conduit, which is arranged in an internal space of the coupling portion and is detachably engaged with the coupling portion for supplying a working medium to the odontotherapeutic hand piece. The head portion, the handle portion and the coupling portion are made of a material which permits integral molding. The head portion, the handle portion and the coupling portion are integrally joined together.