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Accurate tooth position arrangement method of digital tooth model

A technology of tooth model and arrangement method, applied in the field of tooth model processing and tooth position arrangement of digital tooth model, can solve the problem of lack of digital tooth model tooth arrangement method and treatment, achieve accurate tooth arrangement result and improve safety and the effect of accuracy

Active Publication Date: 2021-01-29
陈学鹏
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The existing technology lacks the way and processing of the tooth position arrangement of the accurate digital tooth model

Method used

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  • Accurate tooth position arrangement method of digital tooth model
  • Accurate tooth position arrangement method of digital tooth model
  • Accurate tooth position arrangement method of digital tooth model

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Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with specific embodiments.

[0053] Embodiments of the present invention are as follows:

[0054]Step 1) Digital dental three-dimensional model processing and CBCT model modeling. Accurate crown model data is obtained by segmenting and processing the digital jaw model; CBCT data contains root information and alveolar bone information, and the root model data and alveolar bone are obtained by extracting relevant features in CBCT Model data: Accurate crown model data obtained through digital jaw processing is combined with root model data obtained in CBCT to obtain accurate and complete tooth model data. The specific operation method is:

[0055] 1.1 Segment the digital 3D model of the teeth and restore the adjacent surfaces of the teeth to obtain the complete crown model set MT0 of each tooth.

[0056] 1.2 CBCT data processing, obtain part of the image of the root through CBCT, and perform ...

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Abstract

The invention discloses an accurate tooth position arrangement method of a digital tooth model. The method comprises the following steps of processing a digital dental three-dimensional model and modelling CBCT data to obtain a tooth model, a basal bone model of an upper jaw dental jaw bone and a basal bone model of a lower jaw dental jaw bone; establishing a tooth movement local coordinate systemand extracting tooth model feature points; determining an ideal dental arch line according to the feature points; processing the tooth model to obtain a three-dimensional position of an ideal dentalarch line; and adjusting the position of the tooth root in the tooth movement local coordinate system according to the position relationship between the tooth root of the tooth model and the basal bone model of the maxilla of the upper and lower jaws, and correcting the position of each tooth to obtain the final tooth position. CBCT volume data and the three-dimensional dental model are subjectedto feature extraction, and the accurate positions of the dental crown and the dental root are considered, so that the tooth arrangement result is accurate.

Description

technical field [0001] The invention belongs to a tooth model processing method in the field of oral cavity digital model processing, and in particular relates to an accurate tooth position arrangement method of a digital tooth model. [0002] technical background [0003] Computer simulation of tooth arrangement is one of the key technologies of orthodontics. Computer technology is used to arrange the digital model of teeth. On the one hand, analyzing the orthodontic movement direction of each tooth in three-dimensional space can be used as a reference for doctors to formulate treatment plans. , to visually display the arrangement process of the digital three-dimensional tooth model, and to understand the orthodontic results in advance. [0004] Cone beam computed tomography (CBCT) is another imaging technique that is increasingly used in orthodontics. Compared with panoramic films, CBCT scans can accurately show the true angle and three-dimensional inclination of the root,...

Claims

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Application Information

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IPC IPC(8): G06T19/20G06T17/00A61C7/00
CPCG06T19/20G06T17/00A61C7/002G06T2219/2004A61C2007/004
Inventor 陈学鹏宁楠林海叶亨妮曾理
Owner 陈学鹏
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