rotary endodontic cutting instruments in the nature of engine-driven and hand rotary files for the cleaning and shaping of root canals in teeth; paper points and gutta percha points for drying and filling root canals; electric-powered hand pieces for use in access, instrumentation and obturation of root canals; dental instruments, namely, rotary cutting instruments, diamond coated or fluted carbide rotary instruments for accessing the pulpal chamber during root canal therapy; various hand ins...