Medical and dental instruments, namely dental burrs, dental picks, dental mirrors, dental ultrasonic handpieces and tips therefor, sprayers for cleaning gums and teeth, dental drills, cavity preparation instruments, namely, oral irrigators; dental scalpels; X-ray appliances for dental and medical use, namely, extra-oral and intra-oral lighting devices, namely dental lamps; intraoral electromagnetic medical diagnostic imaging apparatus and intraoral digital sensors used for taking digital dental radiographs; replacement parts of all of the above instruments and appliances; dental prophylactic instruments, namely polishing instruments; special furniture for medical and dental use, namely dental examination chairs, dental patient treatment chairs with or without basins for rinsing the mouth, treatment sites for oral prophylactics comprising a dental patient examination chair and dental instruments, as listed above in this class, connection consoles for dental handpieces, instrument cabinets, dentists' elements, dental assistant's elements, treatment tables, footrests, sinks, cuspidors, lamps, trolleys; treatment units for oral prophylactics comprising a treatment seat and dental instruments, dental treatment seats with or without basins for rinsing the mouth, extra-oral and intra-oral lighting devices for medical use, namely lamps for medical and dental use; optical measuring appliances for medical and dental use, namely intra-oral and extra-oral scanning appliances, namely dental cameras; intraoral scanners, intraoral X-ray sensors used for taking digital dental radiographs; grinding machine for medical and dental ceramics as well as for materials suitable for producing teeth or dental prostheses parts of teeth; X-ray appliances for medical and dental use, dental instruments and apparatus for planning and realization of dental prostheses and implants, namely cavity preparation instruments in the nature of dental burrs; root canal preparation instruments in the nature of thin flexible dental burrs, milling instruments for dental use; electrical medical indicators, namely displays for examining dental radiographs, LEDs indicating settings of medical and dental instruments and appliances; electrical control units, namely control desks and control panels and combined displays and control panels and desks for medical and dental instruments and apparatus, particularly for X-ray devices, or patient chairs; dental handpieces for the removal of tooth substance, calculus, and/or plaque, grinding machines, bits for dental handpieces