Simulation method and devices for gingival deformation

A simulation method and technology of gingiva, applied in the field of oral cavity, can solve problems such as unreality and low efficiency of gingiva, and achieve the effect of small amount of calculation and high efficiency of deformation simulation

Active Publication Date: 2018-11-20
北京正齐口腔医疗技术有限公司
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Problems solved by technology

[0004] In view of this, the gingival deformation simulation method and device provided by the present invention aim to solve the problems of low efficiency and unrealistic gingival deformation simulation methods

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  • Simulation method and devices for gingival deformation
  • Simulation method and devices for gingival deformation
  • Simulation method and devices for gingival deformation

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[0028] Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood, and the scope of the present application can be fully conveyed to those skilled in the art.

[0029] The radial basis function is a function whose independent variable is distance, and its distance can be Euclidean distance or other. In grid deformation, different application scenarios can define the movement of different boundary points. This algorithm has nothing to do with grid edges. It only needs to calculate the displacement of points, so it does not change the topology of the grid at all. . Radial...

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Abstract

The invention discloses a simulation method and devices for gingival deformation, and relates to the technical field of oral cavity. The problems of inefficiency and untruthfulness of conventional gingival deformation simulation methods can be solved. The method includes the following steps: determining a gingival border point, a tooth corresponding to the gingival border point and a fixed point of gingival mesh deformation, the gingival border point being the boundary point between a tooth mesh and a gingival mesh; taking the point between the border line formed by the gingival border point and the order line formed by the fixed point as a deformation point, and determining the tooth corresponding to each deformation point; and when the tooth is transferred, updating the position of the gingival border point and the deformation point corresponding to the transferred tooth by using the transfer matrix of the transferred and a radial basis function interpolation method so that the gingival mesh can be updated. The method and the device are mainly suitable for the scenes of performing automatic stimulation on gingival soft tissue deformation.

Description

technical field [0001] The invention relates to the field of oral cavity technology, in particular to a simulation method and device for gingival deformation. Background technique [0002] In virtual orthodontics, the patient's three-dimensional dental mesh model is usually obtained through intraoral scanning. The three-dimensional dental mesh model is divided into the crown area and the gingival area. Usually, the gingival area is a connected flow pattern grid. When straightening a deformed tooth, as the tooth is straightened to a target position, the gum also moves with the shift of the tooth and causes a state change. [0003] The current methods for simulating gingival deformation mainly include physical methods and non-physical methods. Among them, the physical method mainly considers the biomechanical characteristics of the gingival soft tissue, such as stress-strain relationship, heterogeneity, anisotropy, and viscoelasticity, and uses these biomechanical characteris...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C7/00
CPCA61C7/002
Inventor 陈莉金林荣
Owner 北京正齐口腔医疗技术有限公司
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