Abstract: The invention relates to an injection device with an injector (12) and with a cartridge (14) that contains dental material and can be inserted into or attached onto the injector (12), said injector (12) having a piston (28) which, as it enters the cartridge (14), is intended to press the dental material out of the cartridge (14), said cartridge (14) having a collar (16) which is intended to bear on a holding projection (20) of the injector (12). The holding projection (20) is formed on a guide element (36) of the injector (12). The guide element (36) has a sensor (50) for a code (52) which is applied to the cartridge (14), and the injector (12) has a display at an area spaced apart from the holding projection (20), particularly on the top face, or obliquely on the top face, in the rear area of the injector (12).

Abstract: A soft tissue laser with a display, a control device, a controllable laser light source, a first light-conducting element and a receptacle at the light-emitting side end of a first light-conducting element, at which different tips having a second light-conducting element each can be arranged in such a fashion that they can be removed again, which tips differ from one another in the diameters of the second light-conducting elements and/or in the amount by which the second light conductor axially exceeds the free end of the tip. The control device, in particular depending on the desired work process, determines the suitable tip and controls the laser light source in such a fashion that the power necessary for the work process selected is available at the free end of the second light-conducting element.

Abstract: A device (10) and method for determining and controlling the degree of polymerization of polymerizable dental material (14), which device includes a light and/or heat source (18 or 20), with which the dental material (14) is impinged. The device further includes a control device (26) and a sensor (24) connected to the control device (26), whereby the sensor (24) detects radiation (natural radiation) emitted from the dental material (14) of a predetermined wavelength.

Abstract: A device (10) and method for determining and controlling the degree of polymerization of polymerizable dental material (14), which device includes a light and/or heat source (18 or 20), with which the dental material (14) is impinged. The device further includes a control device (26) and a sensor (24) connected to the control device (26), whereby the sensor (24) detects radiation (natural radiation) emitted from the dental material (14) of a predetermined wavelength.