MATERIALS FOR VENEERING ARTIFICIAL TEETH AND TEETH PROSTHESIS, namely, METAL CERAMICS, CERAMICS AND [PLASTICS;] [ METALS, PRECIOUS METALS AND ALLOYS THEREOF AS WELL AS ] CERAMIC MASSES [AND PLASTICS] FOR DENTAL USE; [ MATERIALS FOR STOPPING TEETH AND ] VENEERING MATERIALS FOR DENTAL USE, [ MATERIALS FOR MODEL PREPARATION AND MODEL PROCESSING FOR DENTAL USE; MODELLING MATERIALS, namely, WAXES FOR DENTAL USE; IMPRESSION MATERIALS, DUPLICATING MATERIALS, INVESTMENT MATERIALS AND ] [FIXING MATERI...