Dental preparations, namely, enamel substances for repairing teeth, bonding materials, drying agents for the purposes of tooth repair, [ molding wax, ] material for repairing teeth and for dental crowns and bridges, dental cement, [ dental stoppings, amalgam and alloys for dental purposes; ] etchants in the nature of sealants [ and adhesives for dentures; ] dental restoration materials in the nature of material for repairing teeth and for dental crowns and bridges, namely, tooth repair pastes...