Parametric surface reconstruction method for false tooth discrete data

A technology of discrete data and surface reconstruction, which is applied in the field of parametric surface reconstruction of denture discrete data, can solve the problems of inability to meet the requirements of clinical one-time visit, long production cycle, cumbersome process, etc., to achieve convenient modification and physical operation, shorten Oral restoration cycle, the effect of high surface precision

Inactive Publication Date: 2015-12-02
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Although this method does not have high technical requirements, the process is cumbersome, the production cycle is long, the working environment is poor, and it consumes a lot of human resources, and it cannot meet the requirements of one-time clinical visits. Patients need multiple visits to achieve satisfactory results, which not only wastes time. , and increased patient suffering

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  • Parametric surface reconstruction method for false tooth discrete data
  • Parametric surface reconstruction method for false tooth discrete data
  • Parametric surface reconstruction method for false tooth discrete data

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Embodiment Construction

[0025] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0026] 1. Triangular mesh model reconstruction based on denture discrete data

[0027] Step1. Choose a point A in the discrete data P, find the nearest point B in the neighborhood of A, use AB as a side of the seed triangle, and then find a point C in the neighborhood of A and B, so that The minimum interior angle of ΔABC obtains the maximum value, ΔABC is used as the seed triangle, and the three sides of ΔABC are used as the ...

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Abstract

The invention relates to a parametric surface reconstruction method for false tooth discrete data. The method comprises the following steps: quickly reconstructing a triangular mesh model of a false tooth by utilizing a circumsphere criterion; mapping top points of the triangular mesh model of the false tooth to a unit square of a planar parameter domain in a one-to-one manner with a mean value coordinate parameterization method; according to an inverse mapping technology, mapping regular sampling points on the unit square of the planar parameter domain to the triangular mesh model; and obtaining regular sampling points of the triangular mesh model and obtaining a B-spline surface of the false tooth with a B-spline surface interpolation algorithm. According to the method, the oral repair cycle can be shortened and the pain of oral patients can be relieved.

Description

technical field [0001] The invention relates to the technical field of denture CAD surface reconstruction, in particular to a parametric surface reconstruction method for discrete data of dentures. Background technique [0002] With the gradual improvement of people's living standards, the incidence of dental diseases is getting higher and higher. Denture mosaic is the most commonly used method for dental caries treatment in oral restorative surgery, and the production of denture is the most critical link in denture mosaic surgery, and the quality of denture production is directly related to the treatment effect. Traditional denture production needs to go through multiple processes such as making impressions, trimming models, carving wax models, casting, sandblasting, stacking porcelain, firing porcelain, trimming, and polishing. Although this method does not have high technical requirements, the process is cumbersome, the production cycle is long, the working environment i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30G06F17/50
Inventor 程仙国崔娇月
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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