Dental apparatus and instruments, namely, dental handpiece, air motor for handpiece, micromotor for handpiece, air scaler, ultrasonic scaler, ultrasonic cutter, dental instruments for measuring root canal length, portable dental equipment, namely, cabinet for storage of dental instruments, carrying case adapted for carrying dental instruments, self-contained dental treatment units, comprised of a carrying case, control unit for a motor handpiece, control unit for scaler handpiece, battery, AC...