Dental apparatus and instruments, namely, pontics, dental implants, dental crowns, dental prostheses in the form of inlays, dental prostheses in the form of onlays, orthodontic aligners, orthodontic braces, orthodontic instruments, orthodontic retainers, orthodontic rubber bands, teeth protectors for dental purposes and structural and replacement parts and fittings therefor; orthodontic apparatus, namely, orthodontic appliances and orthodontic devices in the nature of braces for use in straig...