Method of reconstructing dentition through dental CT (Computed Tomography) image and three-dimensional scanning data

A CT image and three-dimensional scanning technology, applied in image data processing, image enhancement, image analysis, etc., can solve the problem of low voxel resolution of the three-dimensional model of teeth and jaws, and achieve the effect of avoiding bone window and bone cracking

Pending Publication Date: 2018-10-16
NAT INST CORP OF ADDITIVE MFG XIAN
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[0003] In order to solve the existing technical problem of low voxel resolution of the patient's complete three-dimensional model extracted from CT images, the present invention provides a method for reconstructing dentit

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  • Method of reconstructing dentition through dental CT (Computed Tomography) image and three-dimensional scanning data
  • Method of reconstructing dentition through dental CT (Computed Tomography) image and three-dimensional scanning data
  • Method of reconstructing dentition through dental CT (Computed Tomography) image and three-dimensional scanning data

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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0037] figure 1 It is a flowchart of the implementation of the present invention. In an embodiment of the present invention, a method for reconstructing dentition by using dental CT images and three-dimensional scanning data specifically includes the following steps:

[0038] S1: Use CT equipment to obtain oral CT images, and intercept the target area of ​​interest, and retain the rectangular area containing teeth and complete alveolar bone. This method reduces the amount of calculation, and the CT value of the non-skeletal area around the normal hum...

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Abstract

The invention provides a method of reconstructing a dentition through a dental CT (Computed Tomography) image and three-dimensional scanning data. The method includes the steps of: preprocessing the CT image, and removing soft-tissue pixels; using an image segmentation method to obtain all individual tooth contours; using a surface drawing method to obtain a dentition model of the CT image; and establishing a segmentation surface to extract all dental crown models of the CT image; obtaining a three-dimensional scanning model of a dental jaw, and obtaining independent dental crown models afterprocessing; registering the dental crown models of the CT image and the dental crown models of the scanning data; and carrying out fusion and reconstruction on dental root models of the CT image and the dental crown models of the scanning data to effectively construct a three-dimensional model of the dentition with dental crown information with high precision. The method solves the existing technical problem that voxel resolution of patient complete-dental-jaw three-dimensional-models extracted through CT images is low, and can be used for formulation assisting of invisible-orthodontics schemes of physicians, assisted design of orthoses and further biomechanical analysis.

Description

technical field [0001] The invention relates to the technical field of orthodontics, in particular to a method for reconstructing dentition. technical background [0002] In the field of orthodontics, in the traditional treatment process, the physical model of teeth and jaws is the main basis for doctors to diagnose malformation, plan treatment plans and design appliances, but the physical model of teeth and jaws only includes the crown part, and lacks the root and jaw. The three-dimensional information of bone cannot determine the tooth axis of impacted teeth and impacted teeth with only partial crown eruption or no crown eruption. With the wide application of computed tomography (CT) technology in clinical orthodontic treatment, the complete three-dimensional model of patients’ teeth and jaws can be extracted from CT images, which can accurately reflect the shape, size, arrangement of teeth and upper The occlusal relationship of the mandibular teeth. However, the voxel r...

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Application Information

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IPC IPC(8): G06T17/00G06T7/10G06F17/50
CPCG06T7/10G06T17/00G06T2207/10028G06T2207/10081G06T2207/30036G06F30/00
Inventor 王晶马睿佳卢秉恒王亚芳罗辰宇王静
Owner NAT INST CORP OF ADDITIVE MFG XIAN
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