Medical apparatus and instruments, namely, dental prostheses; surgical apparatus and instruments; dental apparatus and instruments, namely, dental prostheses; orthodontic apparatus, namely, orthodontic retainers and braces for straightening teeth and treating malocclusions; parts of dental and orthodontic, periodontic, pedodontic, prosthodontic and endodontic prostheses, namely, bone screws; artificial dental implants and prostheses; artificial surgical implants and prostheses for teeth; spec...