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A Method for Detecting Fractures and Cracks of Cracked Teeth Using Image Intensifier and Cone Beam CT Imaging Technology

A technology of image enhancement and CT imaging, which is applied in the fields of radiological diagnosis instruments, applications, dental radiological diagnosis, etc., and can solve problems such as affecting the diagnostic accuracy.

Active Publication Date: 2020-06-19
NANJING STOMATOLOGICAL HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of using CBCT to diagnose cracked teeth, due to the complexity of longitudinal root fractures (depth, length, width, location), different CBCT scanning systems (voxel resolution, scanning dose, detector, image post-processing) The accuracy, sensitivity, and specificity of CBCT diagnosis of longitudinal root fissures still have room for improvement due to factors such as filling artifacts and filling artifacts, especially the linear low-density artifacts formed by fillings in the root canal are similar to those of root fractures. Cracks greatly affect the accuracy of diagnosis

Method used

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  • A Method for Detecting Fractures and Cracks of Cracked Teeth Using Image Intensifier and Cone Beam CT Imaging Technology
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Examples

Experimental program
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Effect test

Embodiment 1

[0015] A method of using image intensifier and cone-beam CT imaging technology to detect fractures and cracks in cracked teeth: use the enhanced contrast agent diatrizoate to enhance the cracks, wait for the contrast agent to penetrate into the cracks, and quickly pass through cone-beam CT imaging To judge the location and depth of cracks in cracked teeth, and distinguish them from the linear low-density artifacts formed by root canal fillings.

[0016] When the cracked tooth belongs to the third type of cracked tooth, the detection method is: apply 30%-40% meglumine diatrizoate on the surface of the cracked tooth with a cotton swab, and apply it repeatedly on the surface of the cracked tooth. After 10 minutes, wait for the contrast agent to penetrate into the crack Afterwards, the cracked teeth were scanned with conventional-dose cone-beam CT scanning, and the position and nature of the cracks were determined by contrast agent-enhanced images of the cracks.

Embodiment 2

[0018] A method of using image intensifier and cone-beam CT imaging technology to detect fractures and cracks in cracked teeth: use the enhanced contrast agent diatrizoate to enhance the cracks, wait for the contrast agent to penetrate into the cracks, and quickly pass through cone-beam CT imaging To judge the location and depth of cracks in cracked teeth, and distinguish them from the linear low-density artifacts formed by root canal fillings.

[0019] When the cracked teeth belong to the four types of vertically fractured teeth, the detection method is: use a fine needle tube with a diameter of 0.2mm to extract 0.5ml of diatrizoate meglumine at the crack or inject it under pressure in the medullary cavity, After waiting for 10 minutes, CBCT routine dose detection was performed to determine the position of the fracture line of the longitudinally fractured tooth.

Embodiment 3

[0021] A method of using image intensifier and cone-beam CT imaging technology to detect fractures and cracks in cracked teeth: use the enhanced contrast agent diatrizoate to enhance the cracks, wait for the contrast agent to penetrate into the cracks, and quickly pass through cone-beam CT imaging To judge the location and depth of cracks in cracked teeth, and distinguish them from the linear low-density artifacts formed by root canal fillings.

[0022] When the cracked tooth is a tooth with five types of vertical root fracture, the detection method is: remove the filling in the pulp cavity and the upper part of the root canal, and use a fine needle tube with a diameter of 0.2mm to extract 50%-60% of the crack that occurred on the root. 1ml of diatrizoate meglumine was injected under pressure in the medullary cavity, and after waiting for 10 minutes, after the contrast agent penetrated into the crack, it was quickly developed by cone-beam CT imaging to judge whether there was a...

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Abstract

The invention relates to a method for detecting cracks in cracked teeth using image intensifiers and cone beam CT (CBCT) imaging technology. It is characterized in that: the enhanced contrast agent meglumine diatrizoate is used to enhance the cracks, and the contrast agent penetrates into the Within the crack, cone beam CT imaging is quickly developed to determine the location and depth of the crack in the cracked tooth, and to identify it from the linear low-density artifacts formed by the root canal filling. Through the implementation of the above method, the accuracy, sensitivity and specificity of CBCT diagnosis of cracked teeth can be effectively improved, and the accuracy of CBCT positioning of cracked teeth can be improved.

Description

technical field [0001] The invention belongs to the technical field of oral and maxillofacial medical imaging, and in particular relates to a method for detecting cracks in cracked teeth by using an image intensifier and cone-beam CT imaging technology. Background technique [0002] Cracked teeth are one of the three main causes of tooth loss in adults following periodontal disease and dental caries. Due to the variety of clinical manifestations in different clinical stages of cracked teeth, the complexity and uncertainty of diagnosis, cracked teeth have always been widely concerned by researchers in the field of endodontics at home and abroad. In 1997, the American Association of Endodontists (AAE) classified cracked teeth into five categories: enamel surface cracks (Craze line); cusp fractures (Fractured cusp); cracked teeth (Cracked tooth); Split tooth; vertical root fracture (Vertical root fact, VRF), this classification divides cracked teeth in a broad sense into 5 cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03A61B6/14A61B6/51
CPCA61B6/032A61B6/481A61B6/51
Inventor 林梓桐袁梅王铁梅曹雅高安天觧鑫
Owner NANJING STOMATOLOGICAL HOSPITAL
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