Patent ID: 7189344

Claim:
A method for producing a synthetic dental restorative part such as a full or partial dental prosthesis, comprising: providing a base; spray applying with a spray device a material having at least a polymerizable synthetic material onto the base in succeeding layers such that each layer of the spray applied material is polymerized by a light source, the material includes a wax like substance having a viscosity such that a run off of the just applied spray drops used for the layer building is prevented while, on the other hand, the viscosity value is so small that it is possible to perform a penetration of the spray jet thereinto in a favorable manner; and hardening at least one already applied layer prior to the application of subsequent layers to form the dental restorative part; and wherein the material which is spray applied is a polymerizable wax-like dental material having up to 70% by weight of at least one of a polymerizable monomer and oligomer, from 0.01 to 10% by weight of a polymerization initiator, and at least 20% by weight of a mixture having a selected one of wax-like and a flowable monomer and a color pigment, and the dental material has the property that one of its physical condition and its viscosity changes within a relatively small range of temperature flux.