Digitalized generation method for outside surface of full crown prosthesis

Abstract

The invention discloses a digitalized generation method for outside surface of a full crown prosthesis. The method comprises the following steps: based on a standard crown with the same name of a current repair model, importing a standard crown model with the same name from a database; preprocessing the standard crown model; editing and processing the preprocessed standard crown model; dynamicallycutting the edited and processed standard crown model; generating a transition mesh surface according to the cut standard crown model; conducting specific deformation processing on the outer surfaceaccording to the transition mesh surface to obtain the outer surface of the full crown prosthesis. The method ensures that there is no interference between a standard crown boundary and an inner surface boundary, creates a good boundary position relationship for transition between the standard crown and the inner surface, significantly improves the generation quality of a transition surface, and ensures that the full crown prosthesis obtained through the design not only meets a specific supporting strength but also maintains the vast majority of the standard dentofacial and maxillofacial morphologies. The method can be widely used in the field of denture restoration.

Description

technical field [0001] The invention relates to the technical field of denture restoration, in particular to a method for digitally generating the external surface of a full crown restoration. Background technique [0002] In recent years, the application of CAD / CAM technology in the field of oral restoration has achieved rapid development. Compared with traditional manual restoration methods, oral CAD / CAM technology has significantly reduced the labor intensity of dental technicians and greatly improved restoration efficiency. , with better restoration quality, and at the same time meet the design requirements of personalized restorations. In oral clinical restoration, when there are serious defects in the maxillofacial teeth, full crowns are required for restoration. A full crown is a restoration that covers the entire tooth surface and is used to replace a tooth that has completely damaged the maxillofacial surface. The digital design of a full crown consists of two par...

AI Technical Summary

Problems solved by technology

Due to the high complexity of the outer surface generation algorithm, after adjusting the standard crown, the generation effect of the outer surface cannot be displayed from time to time, which affects the continuity of editing, and the execution efficiency of the algorithm is low

[0005] Moreover, there is no thickness constraint on the internal and external surfaces of general full crown restorations, so it is impossible to ensure that the support strength of full crown restorations meets the requirements.

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