| 摘要 |
The invention concerns a process for manufacturing a dental restoration, in which, based on a scanning result of a mouth situation with the help of a CAD software, a dental restoration is designed and is produced as a positive model in a shaping step in a material that is removable without leaving residues, such as wax or polyacrylics, by means of removing or in a generative fashion, for instance by means of rapid prototyping, which positive model is demoulded and removed with the help of a muffle in a basically known fashion, and which muffle is provided with a pressing channel which is connected via a conveyor channel with a cavity for the dental restoration corresponding to the positive model, wherein the blank inserted into the pressing channel is heated and is subjected to pressure, such that it is deformed and dental material for shaping the dental restoration flows into the cavity through the conveyor channel and fills the former, characterised in that in the shaping step or subsequent to that, based on the dimensions of the muffle in relation to the size and shape of the positive model or the positive models, at least one conveyor channel is automatically produced for each positive model with the help of a module of the CAD software, wherein the module defines a virtual inside space within the muffle for arrangement of the dental restoration inside that, wherein the conveyor channel extends at an angle of between 0° and 130°, in relation to the axis of the pressing channel in an inclined fashion away from that, in particular essentially along an isotherm inside the muffle, wherein the position with the largest wall thickness of the positive model is selected as a docking site, and the module positions the positive model in relation to the conveyor channel in such a fashion that it extends in elongation of the axis of the conveyor channel and the length of the virtual axis through the positive model is maximised. |
