Production of dental prostheses via CAD and rapid manufacturing from digitally recorded oral data

Abstract

Summary Methods for the production of complete or partial prostheses involve, firstly A) provision of 3D data of the situation in the mouth in the edentulate or partly toothed state; B) digital designing of the denture base for lower and upper jaw each; C) digital positioning of virtual teeth with appropriate occlusion and a tooth shape selected according to aesthetic criteria, in the case of complete prostheses, D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the denture base using an automated method from the groups of layer-building and of material-removing methods; and, in the case of partial prostheses; D1) production of the dental arch using an automated method from the groups of layer-building and of material-removing methods; and D2) production of the support structures or fastening elements using an automated method from the groups of layer-building and of material-removing methods.

Description

technical field [0001] The present invention relates to a method for the automated manufacture of dentures, in particular the manufacture of individual dentures from digitally extracted data of oral conditions via CAD / CAM and rapid manufacturing / rapid prototyping. Background technique [0002] The manufacture of complete dentures and partial dentures is carried out according to known methods. Mention is to be made, for example, of the conventional methods of powder / fluid technology, as known for a long time and described in the literature (eg EP 1 243 230 A2, US 6 881 360 B2 and "Ullmann's Encyclopedia of Industrial Chemistry Copyright 2002 by Wiley -VCH Verlag" in "Dental Materials"). [0003] Three different main material classes are generally known for the manufacture of full denture articles. They are two-component materials based on polymethylmethacrylate (PMMA) [commercial products Palapress, Paladur (Heraeus Kulzer, DE), Quick (Ivoclar, LI), (Degussa-Hüls, DE)];...

AI Technical Summary

Problems solved by technology

[0019] The above methods have been continuously improved in terms of technology and the materials used, so that the aesthetic characteristics, which were initially unsatisfactory, have also been improved.

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