Dental instruments and apparatus, namely, hand and angle pieces; electric and pneumatic drives for dental instruments; driving motors for dental instruments; dental motor-instruments couplings; suction apparatus for dental use; vibrators used to condense or compact materials in medical or dental laboratories; dental laboratory apparatus, namely, benches, worktops, drawers, cabinets, hoods, suction hoods, arm rests, safety shields, work trays, instrument drawer inserts, delivery arms, tables, and tabletops; dental laboratory apparatus, namely, workstations, brackets, dust collectors, laboratory light fixtures, work trays, and work trays with bench holder; dental couplings for motors, instruments and for dental power supply hoses; dental drilling machines, flexible hose tubing for dental instruments; articulated sliding connections for dental instruments; rigid and flexible rods for dental instruments; drive shafts for dental instruments; dental turbines; dental instruments and apparatus, namely, computer-aided image processing devices; tables for dentists and dental technicians; files for the preparation of root canals; drive controllers for hand pieces for dentists and dental technicians; caries detectors for dentists; dental bite trays and drills; dental tools, namely, drilling tools and grinding tools for rotating dental and dental-technical instruments as well as tool tips for oscillating dental and dental-technical instruments; dental laboratory chairs, dental laboratory furniture, namely, patient examination and treatment tables for use by dentists and dental technicians; examination chairs for dental medical treatment; dental technical work chairs; dental care systems comprised of dental hand pieces and cleaning equipment therefore