Abstract: A sensor that can be placed intraorally in the mouth of a patient for the production of tooth/jaw exposures of a patient has a narrow housing, approximately rectangular in a top view, for an image detector and a control circuit board to which lines are connected, which can be connected, with a free end, with an image processing unit via a connecting cable exiting from the housing at the back wall of the housing. At least one narrow side of the housing has a rounded shape that is adapted to the anatomical characteristics of the upper jaw of an average patient.

Abstract: According to the invention, a mobile signal pick-up means (11) of a diagnostics installation comprises a radiation receiver (12) for generating electrical signals dependent on the radiation shadow of a transirradiated subject, an image acquisition system (15), a calculating and storage unit (21), a display (22) as well as a communication means. A stationary evaluation means (5, 6, 7, 8) comprising a communication means is provided. The communication means are implemented as bidirectional communication means and serve for the signal transmission between the mobile signal pick-up means (11) and the stationary evaluation means (5, 6, 7, 8).

Abstract: In a method and an apparatus for producing X-ray tomograms of the jaw and skull of a patient, a detector arrangement having at least one x-ray detector is provided. The radiation-sensitive area of the detector is a sub-area of the total detector area required for the subject exposure. The image exposure ensues in a number of chronologically separate sections in which, following a first sub-exposure, the detector arrangement is displaced along the longitudinal axis and/or the transverse axis of the detector surface and the diaphragm aperture of the primary diaphragm associated with the x-ray source is simultaneously correspondingly adapted so that the position of the x-ray beam is shifted so that it still strikes the detector appropriately after the detector is displaced.

Abstract: An X-ray diagnostic apparatus for the production of panorama slice exposures of body parts of a patient, has a rotating unit with a source of radiation and, arranged diametrically thereto, a detector camera with a radiation-sensitive CCD detector and an image-processing unit with a computer, as well as a reproduction unit. For the subsequent determination of a sharp slice and/or of the depth of field, the CCD detector is formed by a number of narrow TDI zones with clock-out columns. The image signals corresponding to the image information containing charge packets are read out from the respective individual TDI zones, and are subject to calculations in the image processing unit, so that the depth of field of a selected slice position can be determined by modifying the local displacement of the individual images using an input unit that interacts with the image processing unit.

Abstract: In a method and an apparatus for producing a tomosynthesis exposure of an examination subject, an X-ray beam is directed at the subject from different directions and a reference object composed of at least two sub-objects is disposed in the X-ray beam together with the subject. X-rays attenuated by the reference object composed of at least two sub-objects and the examination subject are received by a radiation receiver, which generates electrical signals corresponding to X-rays incident thereon, from which a tomosynthesis image is constructed.

Abstract: A mechanism is presented for the constraint-coupled adjustment of seat and backrest of a dental patient chair, whereby the seat-side end of the backrest is guided in a curved guide of the seat carrier, and whereby the seat carrier is pivotably connected to an upper part around a backrest-proximate tilting axis that, given an inclination of the backrest, the seat carrier with seat and leg support is tilted back around the tilting axis and, conversely, is tilted forward when the backrest is raised up. Inventively, a flexible, bendable force transmission element is provided for the constraint-coupling that has its one end secured to the upper part and has its other end secured to the seat-side end of the backrest. The force transmission element is guided over at least one roller in the fashion of a block and pulley and thus produces an adjustment motion effected by constraint-coupling of backrest and seat. A chain that is guided over chain rollers is advantageously provided as force transmission element.

Abstract: A dental apparatus is provided with a group of standard preparation instruments that are held in deposit devices having sensors allocated to each device to determine the configuration and deposit condition of the preparation instrument in the deposit device, the apparatus has a second group of non-preparation instruments which include image-acquiring instruments for diagnostic purposes. Both instrument groups or types share a personal computer with a keyboard and a monitor in common through one interface data where the instrument-related functions can be read in and read out so that the installed program of the personal computer is activated dependent on the particular instrument being used.

Abstract: An X-ray diagnostics apparatus for tomosynthesis has a radiation emitter and a reference object exclusively connected thereto so that the reference object has a fixed reference relationship to the radiation emitter. It is thus possible to determine the spacing of the radiation emitter from the radiation receiver and from the examination subject, the radiation angle and the transirradiation direction on the basis of the signals obtained from the radiation receiver upon transirradiation of the reference subject without having the reference object representing an impediment in the region of the examination subject.

Abstract: This invention relates to the supporting of a patient in a proper position for a treatment, particularly for a dental and/or orosurgical and/or orthodontic treatment. A patient to be treated is supported in a certain position on a treating chair or a treating couch (1) and the treating chair or the treating couch (1) moves that region in which the patient is to be treated, particularly the tooth or jaw region, to a spatial position which is defined by the height of the treating physician and which has previously been stored for a given treating physician or is stored by the treating physician. In dependence on previously determined stored parameters that region in which the patient is to be treated is located at that spatial position for different treatments, particularly of the tooth and/or jaw regions.

Abstract: In a method for producing a tomosynthesis exposure a reference object is used which is formed by a region of the examination subject. It is thus possible to determine the distance of the beam transmitter to the beam receiver and to the examination subject, the irradiation angle, and the direction of irradiation, on the basis of the signals that can be derived from the beam receiver during the transillumination of the reference object, without the reference object causing any disturbance in the region of the subject of examination.

Abstract: A system for activating a dental handpiece connected to a supply hose after removal of the handpiece from a holder is provided. The handpiece includes a circuit with a switch element that acquires a change of an electrical or magnetic field or that can be influenced by such a field when the handpiece is taken from a holder or, respectively, is returned into a holder. The switch element is allocated to the end part of the supply hose facing toward the handpiece; the part that changes or, respectively, influences the field is disposed at the holder.

Abstract: A handpiece for stomatological application of laser light includes a movable light and agent transmission system connected to a proximal side of the handpiece and an application element containing a work tip connected to a distal side of the handpiece. Advantageously, the laser beam in the application element is directed onto an exit location that proceeds essentially transversely with respect to the longitudinal axis of the application element, and is focused such that the focus of the laser light lies immediately in front of a light exit window.

Abstract: An diagnostic apparatus for generating X-ray exposures for tomosynthesis includes a position detector (2, 4) for registering the mutual positional relationship between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination. The position detector (2, 4) can be arranged in part or in whole on the radiation transmitter (1), on the radiation receiver (3) or on the object (7) under examination. An evaluation device (11) evaluates the signals from the position detector (2, 4) and generates correction signals if the relative position between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination deviates from the home position. The correction signals are then fed to an image-generating device (12) for use in the image processing.

Abstract: A radiation diagnostic installation includes a panorama scanner for tomographically scanning a subject with radiation and for generating electrical signals dependent on the radiation shadow of the subject. A signal processor includes a memory for storing the electrical signals during the tomographic scanning and a computer for calculating signals corresponding to a tomogram of the subject in a desired slice position. The computer determines the desired slice position from the calculation of individual slice positions and their evaluation, thereby enabling faster production of tomograms in a desired slice position.

Abstract: An apparatus having a plurality of components with printed circuit boards (PCB) having electronic circuits that act on electrical and/or electromechanical function elements is provided. The PCBs communicate with one another via a serial communication bus. The components have analog and digital signal generators allocated to them whose signals act on the PCBs as an input quantity. The PCBs have the capability for implementing self-tests. The self-tests provide test results that are supplied to a service computer as input quantities. Converters for the data for a transmission via a standard interface are provided for the transmission of the data onto the service computer. In an embodiment, the service computer has a first module with a diagnosis software component that enables an interactive error diagnosis off-line. The service computer also contains a second module that produces a connection between the first module and the apparatus components to enable an on-line diagnosis with the first module.