10 Medical and dental instruments and appliances, namely, dental hand pieces, dental drills, dental scalers, dental burrs, dental picks, dental bridges, dental surgical instruments, dental X-ray appliances; structural parts of aforesaid instruments and appliances; exchangeable inserts for medical and dental instruments with an integrated water and air line, namely, dental hand pieces, dental drills, dental scalers, dental surgical instruments; dental prophylactic instruments, namely, dental picks, dental scalers; special furnishings for medical use, particularly for dental prophylaxis, namely, dental chairs, dentists' chairs; operating units for dental prophylaxis, comprising dental operating chairs and dental instruments, with and without mouthwash basins, extra-oral examination lamps and intra-oral lighting units for medical use, and connection consoles for dental hand pieces, sold as a unit; optical surveying equipment for medical and dental use, namely, electromagnetic diagnostic imaging apparatus, medical and dental X-ray-based scanning apparatus, medical X-ray apparatus; radiological imaging apparatus for medical and dental use; sterilizing units for medical use and disinfecting apparatus for medical use dental hand instruments, namely, dental drills, dental picks, dental scalers, dental burrs, dental hand pieces and replacement parts thereof, all for the removal of tooth substance, calculus and plaque; dental prostheses, namely, dentures, crowns, veneers, caps, implants, inlays, bridges and fitted steel dental shells for use in construction thereof; all aforementioned goods in the field of dentistry