Gingival deformation simulation method based on mass-spring model of long axis of tooth

Abstract

The invention discloses a gingival deformation simulation method based on a mass-spring model of the long axis of a tooth. The method comprises steps of: determining a gingival model; calculating the position of the long axis of the tooth; storing the initial position, the adjacent point, and the mapping point, corresponding to the long axis of the tooth, of a mass point; determining the position, the speed, and the borne force of the mass point in each time step, namely each iteration; calculating the new position of the long axis of the tooth according to a moving matrix when a dental crown is dragged; and determining a stop condition and outputting a simulation result. The gingival deformation simulation method achieves a good simulation effect because an improved mass-spring model is better than a simplified mass-spring model in the deformation effect and is greatly reduced in time consumption.

Description

Technical field [0001] The invention belongs to the field of image processing, and relates to an improved simulation of a simplified mass point spring model in gingival deformation. Background technique [0002] In recent years, with the continuous development of 3D printing technology and digital geometric processing technology, triangular mesh models have become the mainstream representation of 3D models. Then how to conduct interactive real-time simulation of triangular mesh models has always been a concern of researchers. Research hotspots. In the decades of development of deformation technology, in order to make the deformation simulation system more stable, real, real-time, and accurate, scholars have proposed and extended dozens of deformation simulation methods. Many scholars classify them according to different angles, mainly divided into Geometric methods and physical methods. [0003] Among them, the free-formdeformation of solid geometric models was proposed by Sederb...

AI Technical Summary

Problems solved by technology

This method has obvious disadvantages: the interactive process is not intuitive, the flexibility is high and difficult to control, the deformation result is not easy to achieve the expected result, and when the number of control points is large, it will increase the time consumption

However, the amount of calculation is huge, the time is long, and it is difficult to achieve real-time performance, especially for nonlinear finite element

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