5 Dental adhesives; caustic and sealing agents for the surface-treatment of teeth; dental impression materials; dental embedding materials, namely, silicon and polyether materials; dental molding materials, namely, plastic cast, alginate arid silicon; dental ceramics and dental synthetics as fluid, paste or powder for the production and restoration of crowns, bridges, teeth, tooth facets, prostheses, prosthesis parts, palate plates, as a veneering material and filling materials; precious metal alloys for dental purpose; and denture adhesives for use in the dental industry