A method for digitally generating the external surface of a full crown restoration

Abstract

The invention discloses a method for digitally generating the external surface of a full crown restoration. The standard crown model is edited; the edited standard crown model is dynamically cut; according to the cut standard crown model, a transitional mesh surface is generated; according to the transitional mesh surface, the outer surface is specially deformed to obtain The outer surface of a full crown restoration. The invention ensures that the standard crown boundary does not interfere with the inner surface boundary, creates a good boundary position relationship for the transition between the standard crown and the inner surface, greatly improves the generation quality of the transition surface, and ensures the design obtained The full crown restoration can retain most of the standard dental and maxillofacial shapes while meeting the specific support strength. The invention 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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