Split type jaw defect obturator prosthesis manufacturing method

A split type, jawbone technology, applied in the medical field, can solve the problems of poor combination effect of the occluder and removable partial denture, defective sealing effect of the occluder, difficulty in obtaining functional unity, etc. The effect of reducing the occurrence of treatment complications and improving the sealing effect

Active Publication Date: 2017-06-13
SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Problems solved by technology

However, there are still three deficiencies in current research in this area: ①The integration of digital design is low, still requires a lot of manual operations, and the technical sensitivity is high; Inconvenient to use
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  • Split type jaw defect obturator prosthesis manufacturing method
  • Split type jaw defect obturator prosthesis manufacturing method

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[0028] The present invention will be further described below in conjunction with specific embodiments to better understand the present invention.

[0029] Such as figure 1 As shown, the preparation process of the embodiment of the present invention is as follows

[0030] 1) Add cotton rolls in the maxillary vestibular sulcus area to separate the buccal mucosa, and instruct the patient’s tongue not to touch the palate and perform a spiral CT scan with the mouth slightly opened. The collected data is used to set different grayscale thresholds for the soft tissue and bone tissue of the patient. Perform three-dimensional reconstruction, and obtain a three-dimensional digital model of the patient's upper jaw (STL format) after point cloud denoising, triangular facetization, and surface smoothing. Segment the three-dimensional data of the patient's soft tissues, and extract the relevant part of the data of the maxillary dentition, maxillary vestibule, palate, defect cavity, nasal cavity ...

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Abstract

The invention provides a split type jaw defect obturator prosthesis manufacturing method. A complete digital jaw defect obturator prosthesis technical-manufacturing route is established and is almost suitable for all jaw defect patients. The treatment process is greatly simplified, manual processing operation is greatly decreased, the pain of the patients is relieved, and the complicated obturator prosthesis model taking process is simplified into removable partial denture model taking of conventional dentition defect. The obturator prosthesis manufacturing precision and efficiency are improved, an obturator closing effect is improved, a production period is shortened, and the split type jaw defect obturator prosthesis manufacturing method has a very high practical value.

Description

technical field [0001] The invention belongs to the field of medicine, and in particular relates to a method for preparing a split jaw defect prosthesis. Background technique [0002] Due to oral and maxillofacial tumors, trauma, deformities and other reasons, the partial defect of the maxilla and the connection of the oral and nasal cavities will bring many obstacles to the physiological functions of the patients, such as high nasal sound, oral and nasal leakage during eating, and masticatory dysfunction. Moreover, jaw defects accompanied by facial deformities may cause serious psychological disturbances in patients. Faced with this situation, the traditional repair method is to obtain a complete plaster model by taking an impression of the defect area, and then rely on the technician to manually make an integrated prosthetic denture based on the stopper, so as to repair the patient's defect. Hard tissue separates the oral and nasal cavity and restores part of the patient'...

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Application Information

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IPC IPC(8): A61F2/28B33Y50/00B33Y10/00
CPCA61F2/28A61F2002/2889B33Y10/00B33Y50/00
Inventor 顾晓宇焦婷张富强熊耀阳孙健朱陈元
Owner SHANGHAI NINTH PEOPLES HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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