Dental instruments, apparatus, and parts thereof, all included in this class, namely, dental picks, dental burrs, dental drills, oral irrigators, dental mirror; dental ultrasonic hand pieces and tips therefor, dental scalpels, sprayers for cleaning gums and teeth, cavity preparation instruments, namely, dental implants, dental broaches and cavity preparation instruments for cleaning of cavity via irrigation and dental prophylactic instruments, namely, polishing instruments; special furniture ...