Tooth root extraction method based on oral CBCT image

An extraction method and image technology, which is applied in the field of oral CBCT image processing, can solve problems such as lack, inability to reduce the difficulty and risk of surgery, and inability to perform surgery, so as to improve the accuracy, improve the success rate of surgery, and improve the awareness of the degree of digitization Effect

Pending Publication Date: 2019-08-30
重庆布瑞斯科技有限公司
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Problems solved by technology

[0005] In recent years, more and more attention has been paid to the inspection of tooth roots in the process of dental restoration, implant and orthodontic diagnosis and analysis. The existing technology lacks a method for precise tooth root extraction, 3D visuali

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  • Tooth root extraction method based on oral CBCT image
  • Tooth root extraction method based on oral CBCT image
  • Tooth root extraction method based on oral CBCT image

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Embodiment Construction

[0084] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be made below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0085] In Example 1, such as figure 1 , 2 , 3, 4, 17, 18, 19, 20, 21 and 22, firstly, by parsing the oral CBCT file sequence (dcm format), and executing the region growing algorithm, while controlling the CBCT image threshold at 770-25584 interval, and then reconstruct the main anatomical structure (3D view) of CBCT; then based on vtk (third-party library) for the occlusal plane and sagittal pl...

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Abstract

The invention discloses a tooth root extraction method based on an oral CBCT image, and the method comprises the following steps of S100, carrying out the optical scanning, obtaining a three-dimensional tooth jaw and dentition model, and building a projection image and a CBCT file sequence; S200, analyzing the CBCT file sequence through a Marching,Cube and a region growing algorithm; S300, based on the CBCT file sequence, distinguishing the upper tooth jaw and the lower tooth jaw, wherein the distinguishing process comprises the steps that the key frames of the occlusal plane and the sagittalplane are positioned through VTK, and a restrictive region growing algorithm is executed; S400, optimizing the segmentation effect of upper and lower tooth jaws, and manually cutting the tooth jaw model; and S500, removing the noise image of the cut tooth jaw model, and smoothing the noise image. According to the present invention, the surgical risk is reduced, and the surgical success rate is increased.

Description

technical field [0001] The invention relates to the technical field of oral CBCT image processing, in particular to a tooth root extraction method based on oral CBCT images. Background technique [0002] At present, there are mainly two dental panoramic image generation methods in clinical practice: the dental panoramic X-ray photography method and the method of obtaining volume data after oral CBCT reconstruction. [0003] The dental panoramic X-ray photography method mainly uses X-camera and flat panel detectors to move in a special trajectory, collects images of specific positions during the movement, and finally combines the acquired sequence images into a dental panoramic image, which is There are equipment to directly collect and obtain, which has a certain radiation to the human body. The disadvantage of this method is that only two-dimensional projection data of teeth can be obtained, and the morphological information of three-dimensional space of teeth cannot be obt...

Claims

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Application Information

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IPC IPC(8): G06T7/136G06T7/11G06T5/00G16H30/20G16H50/50
CPCG06T7/136G06T7/11G06T5/002G16H30/20G16H50/50G06T2207/10012G06T2207/30036
Inventor 刘宇
Owner 重庆布瑞斯科技有限公司
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