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CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and reconstruction method thereof

A technology for occlusal guides and guides, which is applied in the fields of radiological diagnosis instruments, computer-aided planning/modeling, medical science, etc. The effect of operation time, low cost and low technical requirements

Active Publication Date: 2016-02-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surgical navigation needs to use a large and expensive navigator to register preoperative or intraoperative CT, MRI and other information with the patient entity during the operation, which is not only complicated to operate, but also has the possibility of navigation failure
Surgical guide plate technology has been applied in orthopedics, plastic surgery, and maxillofacial surgery, but most of the patient data used come from CT or 3D scanning, which requires high equipment, and the process of designing the guide plate is also very complicated, requiring specialized engineering designers, which is not conducive to clinical promotion and popularization

Method used

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  • CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and reconstruction method thereof
  • CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and reconstruction method thereof
  • CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and reconstruction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A digital occlusal guide based on CT and CBCT fusion data, including a guide body, the guide plate is hoof-shaped, with a guide plate maxillary surface, a guide plate mandibular surface, a guide plate lip outside and a guide plate lip inside, a guide plate maxillary surface, a guide plate mandible Grooves are respectively provided on the surface, and the shape of the groove fits with the shape of the corresponding tooth crown. The maxillary face of the guide accommodates the upper teeth, the mandibular face of the guide accommodates the lower teeth, and the grooves accommodate the reduced teeth. The groove depth is 1 / 3-1 / 2 of the tooth crown. The thickness of the outer edge of the maxillary surface of the guide plate is 1.0-1.5mm, preferably including the upper and lower teeth, and the upper lip side and the lower jaw lingual side are reserved. Correspondingly, the thickness of the inner edge of the mandibular surface of the guide plate is also 1.0-1.5mm, and the thick...

Embodiment 2

[0042] A digital occlusal guide based on CT and CBCT fusion data, including the guide body and the groove of the connecting rod of the bracket. Grooves are respectively provided on the maxillary face and the mandibular face of the guide plate, and the shape of the groove fits the shape of the corresponding tooth crown; the groove of the bracket connecting rod is arranged on the outer side of the lip of the guide plate. The maxillary face of the guide accommodates the upper teeth, the mandibular face of the guide accommodates the lower teeth, and the grooves accommodate the reduced teeth. The groove depth is 1 / 3-1 / 2 of the tooth crown. The thickness of the outer edge of the maxillary surface of the guide plate is 1.0-1.5mm, preferably including the upper and lower teeth, and the upper lip side and the lower jaw lingual side are reserved. Correspondingly, the thickness of the inner edge of the mandibular surface of the guide plate is also 1.0-1.5mm, and the thickness of the lab...

Embodiment 3

[0046] Aiming at the difficulty of occlusal relationship reconstruction and the need to improve the surgical accuracy of traditional models, this patent uses three-dimensional design software to simulate surgical reset and reconstruct occlusal relationship, so as to design an occlusal guide plate for intraoperative reconstruction of occlusal relationship. The specific manufacturing method Include the following specific steps:

[0047] 1. Data Acquisition

[0048] The CBCT and spiral CT scans were performed on the patients respectively, and the data of the CBCT of the dentition and the spiral CT of the head were obtained.

[0049] At present, there are many ways to obtain data, and the data closely related to maxillofacial fractures mainly include CT data, CBCT data, laser scanning data, etc. Among them, the laser scan data with the highest accuracy can reach 20 μm, including facial scan data and dentition scan data, among which facial scan data has been widely used in the stu...

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Abstract

The invention belongs to the field of maxillofacial plastic medical instruments, and in particular relates to a CT (computerized tomography) and CBCT (cone beam computerized tomography) fusion data based digital occlusion guide plate and a reconstruction method thereof. The guide plate has a horseshoe-shaped body, and the guide plate body is provided with a guide plate upper jaw surface, a guide plate lower jaw surface, a guide plate lip outer side and a guide plate lip inner side, wherein the guide plate upper jaw surface and the guide plate lower jaw surface are provided with a groove respectively, and the shape of each groove is fit with the shape of a corresponding tooth crown. Aiming at the difficulty of reconstructing an occluding relation and the problems that the surgical precision of a conventional model needs to be improved and the like, a CBCT and spiral CT fusion data based virtual occlusion reconstruction method, by simulating operative reduction, virtually reconstructing the occluding relation, designing an occluding plate, recording the occluding relation and performing 3D printing to generate a guide plate real object, is used for operatively reconstructing the occluding relation, reducing the operation difficulty, shortening the operation time, ensuring the operation effect, and improving the reconstruction precision.

Description

technical field [0001] The invention belongs to the field of maxillofacial plastic surgery medical devices, in particular to a digital occlusal guide plate based on fusion data of CT and CBCT and a reconstruction method thereof. Background technique [0002] The occlusal relationship refers to the contact relationship between the upper and lower teeth during various functional movements, and the cusp cross position refers to an occlusal relationship when the upper and lower jaw cusps are staggered to achieve the widest and most intimate contact. It is a repeatable tooth position with high stability. Each patient's life experience, eating habits, and trauma conditions are different, and each person's occlusal relationship is individualized. For patients with severe occlusal disorders, usually accompanied by dentition defects, obvious fracture dislocation, and limited mouth opening, refer to Missing points, etc., doctors often face great challenges when trying to restore th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/00A61B34/10A61B6/03
CPCA61B6/03A61B6/466A61B6/5229A61B2017/00238
Inventor 汤炜田卫东曾维何明耘李鹏
Owner SICHUAN UNIV
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