10 Orthodontic articles, namely, brackets, retainers, appliances, headgear, clasps, bars and expansion screws; dental instruments, apparatus, and materials, namely, plastic material for producing, relining and repair of dental prostheses, dental bite trays, dental bridges, dental broaches, dental burrs, dental caps, dental chairs, dental clips for securing pre-existing dentures, dental crowns, dental dams, dental device that expands the mouth to improve the field of view inside the mouth, dental device that extracts saliva from the work area inside the mouth, dental drills, dental drill bits used in dental motors to enable dentists to cut or drill teeth, dental excavators, dental foundation supports, dental gloves, dental handpieces, dental implants, dental impression trays, dental inlays, oral irrigators, disposable prophy angles, crown and bridge removers, dental intra-oral cameras, dental mirrors, dental onlays, dental operating lamps, dental picks, dental prostheses, dental tray covers made of paper, instruments for performing deep-seated dental extractions; orthodontic machines and instruments; diagnostic apparatus for dental purposes, namely, x-ray imaging apparatus; medical apparatus and instruments, namely, measuring and optical apparatus and instruments for use in dental and orthodontic procedures; artificial jaws; artificial teeth; surgical splints; patient x-ray radiation shields for protection against x-rays, for medical purposes; scalpels; dentures; orthodontic appliances; pins for artificial teeth