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Orthodontic tooth model movement control method and device

A technology of tooth model and control method, applied in orthodontics, dentistry, prosthetics, etc., can solve the problem of single rotation direction of tooth model, etc.

Active Publication Date: 2020-10-23
拉萨含贝医疗科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The embodiment of the present invention solves the technical problem that the rotation direction is relatively single when the tooth model is rotated in three-dimensional space

Method used

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  • Orthodontic tooth model movement control method and device
  • Orthodontic tooth model movement control method and device
  • Orthodontic tooth model movement control method and device

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Embodiment Construction

[0031] At present, the three-dimensional space rotation transformation of the tooth model is based on the space rectangular coordinate system, which can only realize the rotation around the x-axis, the y-axis, and the z-axis.

[0032] In the embodiment of the present invention, after matching and fusing the scanned crown model and the CT tooth model, the center point of the movement transformation of the tooth and the radius of the surrounding sphere of the tooth are determined. Combined with the gesture input by the user, the direction and position of the dial model are determined, and the CT tooth model and the dial model are controlled to rotate with the gesture input by the user, so as to realize the universal rotation of the tooth model.

[0033] In order to make the above objects, features and advantages of the embodiments of the present invention more clearly understood, specific embodiments of the present invention will be described in detail below with reference to the...

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Abstract

The invention discloses an orthodontic tooth model movement control method and device. The method includes the steps: matching and fusing a scanning dental model and a CT (computed tomography) tooth model; calculating the surrounding sphere center M of the matched and fused scanning dental model and the surrounding sphere center N of the matched and fused CT tooth model; determining the movement transformation center point O and the surrounding sphere radius of a tooth according to the surrounding sphere center M, the surrounding sphere center N and a dental crown force bearing point F; determining the direction and the position of a dial model according to the movement transformation center point O of the tooth, the surrounding sphere radius of the tooth and gesture inputted by a user, and controlling the CT tooth model and the dial model to rotate along with the gesture inputted by the user. According to the scheme, the tooth model can universally rotate.

Description

technical field [0001] The invention relates to the field of three-dimensional space transformation, in particular to a movement control method and device for an orthodontic tooth model. Background technique [0002] By 3D scanning the patient's tooth model, a 3D tooth model file that can be displayed on the computer can be obtained. By rotating and moving the tooth model on the computer, it can help the doctor better design the orthodontic treatment plan for the patient. [0003] At present, the three-dimensional space rotation transformation of the tooth model is based on the space rectangular coordinate system, which can only realize the rotation around the x-axis, the y-axis, and the z-axis. SUMMARY OF THE INVENTION [0004] The embodiment of the present invention solves the technical problem that the rotation direction of the tooth model is relatively single when the tooth model rotates in the three-dimensional space. [0005] In order to solve the above problem, an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/00
CPCA61C7/002A61C2007/004
Inventor 袁天然赵炫陈冠宇赵智敏
Owner 拉萨含贝医疗科技有限公司
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