Dental duplicating kits are used when dentures or other dental appliances must be duplicated. These kits often come with step-by-step instructions and are designed with ease of use in mind. Denture duplicating kits usually feature a flask, colored denture repair, tooth shade powder and a silicone spray. These kits enable a dental assistant to produce an identical duplicate denture in the office. Dental duplicating kits allow you to produce full or partial dentures. This is a great alternative for a technician who does not have the training or experience for laboratory denture repair.