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Tooth modeling method based on crown and root features

A technology for crowns and teeth, applied in the field of tooth modeling based on features of crowns and roots, can solve problems such as inability to obtain internal information

Active Publication Date: 2018-08-03
北京赢冠口腔医疗科技股份有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, 3D laser scanning and multi-eye stereo vision acquisition and reconstruction can only obtain the surface data of the model, and the internal information cannot be obtained

Method used

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  • Tooth modeling method based on crown and root features
  • Tooth modeling method based on crown and root features
  • Tooth modeling method based on crown and root features

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Embodiment Construction

[0081] like figure 1 and figure 2 Shown, the present invention is based on the tooth modeling method of crown and tooth root feature, comprises the following steps:

[0082] Step 1. Determine the basic information of the tooth: firstly, obtain the crown data through the laser three-dimensional scanner 1, and the laser three-dimensional scanner 1 collects the parameters of multiple segmented and continuous triangular meshes of the crown, and simultaneously obtains the crown width d, The crown thickness h and crown length c data are stored in the memory 3 by the processor 2; then, given the crown-to-root ratio α, neck width-to-crown width ratio β, and neck thickness-to-crown thickness ratio γ of various types of crowns;

[0083] In this embodiment, according to the total of 32 human permanent teeth, the middle symmetry axis of the teeth is called the midline, the direction close to the midline is called the mesial, and the far away is the direction away from the midline. The 3...

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Abstract

The invention discloses a tooth modeling method based on dental crown and tooth root characteristics. The tooth modeling method includes the following steps that 1, tooth basis information is determined; 2, the average curvature and the gaussian curvature at a top point of a triangular mesh are determined; 3, the computational processes of the average curvatures and the gaussian curvatures at all the top points of continuous triangular meshes of multiple segmentations of a dental crown are completed; 4, the type of the dental crown is extracted; 5, whether the tooth type is single or not is judged; 6, a tooth model of the single-root tooth is established; 7, the tooth model of the multi-root tooth is established. According to the tooth modeling method, a dental crown model of a single tooth is obtained through a laser three-dimensional scanner, the dental crown and tooth roots are separated, the type of the tooth is determined according to the characteristics of the dental crown, the corresponding tooth root model is established, and the tooth modeling method is high in accuracy, small in calculation quantity, visible, rapid, effective and low in cost.

Description

technical field [0001] The invention belongs to the technical field of tooth modeling, and in particular relates to a tooth modeling method based on the characteristics of a tooth crown and a tooth root. Background technique [0002] Currently, the methods for obtaining 3D dental and jaw data and establishing dental models mainly include 3D laser scanning, multi-eye stereo vision acquisition and reconstruction, and CT image reconstruction. Three-dimensional laser scanning uses the principle of triangulation measurement, and uses CCD to obtain the reflected light of the laser on the surface of the model to obtain model surface data. Three-dimensional laser scanning can obtain data at high speed and high precision. Many scholars have used three-dimensional laser scanning to build tooth model. Multi-eye stereo vision acquisition and reconstruction is a low-cost, easy-to-operate digital acquisition and reconstruction method. It uses two high-pixel CMOS digital cameras to collec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16H50/50
CPCG16H50/50
Inventor 李占利高天宇李洪安武璠菲
Owner 北京赢冠口腔医疗科技股份有限公司
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