10 SURGICAL AND DENTAL MATERIALS, NAMELY, PLASTICS FOR PRODUCING DENTAL PROSTHESES, PARTS THEREOF, DENTAL IMPLANTS, CENTRAL TRAYS, GNATHO-RINGS, AND PATTERNS, AND SILICONE DUPLICATING MATERIALS, NAMELY, SILICONES AND SILICONE RUBBERS FOR MAKING MOLDS FOR FORMING DENTAL PROSTHESES; MATERIALS FOR DENTAL TECHNOLOGY, NAMELY, MOLDING AND CASTING SEPARATORS, CASTING RING CRAYONS AND INVESTMENT MARKERS, DENTAL INSTRUMENTS AND APPARATUS, NAMELY, DENTAL IMPRESSION TRAYS, GRINDERS, APPLICATOR INSTRUMENTS FOR USE IN THE PRACTICE OF DENTISTRY IN THE FIELDS OF DENTAL IMPLANTOLOGY, DENTAL SURGERY, ORTHODONTICS, PEDIATRIC DENTISTRY, PERIODONTICS, PROSTHODONTICS, RESTORATIVE AND CONSTRUCTIVE DENTISTRY; PROTECTIVE CHAMBERS, NAMELY, UV CHAMBERS FOR STERILIZING DENTAL INSTRUMENTS; DENTAL INSTRUMENTS IN THE FORM OF CUTTING DISKS, BURS, UV CURERS, SYRINGES, AND UV POLYMERIZERS; DENTURE BASES, NAMELY, THE LOWER PART OF DENTURES THAT RESTS ON THE ORAL MUCUS MEMBRANE AND TO WHICH ARTIFICIAL TEETH ARE ATTACHED; CONNECTORS, NAMELY, DENTAL ATTACHMENT SYSTEMS COMPRISING CLAMPS, PLATES, BARS AND POSTS FOR INSTALLING DENTAL IMPLANTS AND DENTAL PROSTHESES; GOODS OF METAL FOR DENTAL USE IN CREATING DENTAL PROSTHESES, NAMELY, LASER WELD JOINTS, LATCHES, LOCKING PINS, STUDS, AND BARS; DENTAL INSTRUMENTS IN THE FORM OF ACTIVATING PLIERS, MANDRELS, DRILLS, CUTTERS, POLISHERS, WAX HEATERS, WAX KNIVES, AND WAX DIPPERS; ARTIFICIAL TEETH