Manufacturing method for personalized bracket for repairing of center plane across mandibular defect

A central plane and manufacturing method technology, applied in the direction of bone implants, etc., can solve the problems of irreparable, fast absorption and unable to provide good mechanical support, so as to promote and guide bone growth, good stress structure, and good bone growth Effect

Inactive Publication Date: 2013-09-18
GENERAL HOSPITAL OF PLA
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the current tissue engineering repair based on stem cell technology uses absorbable materials as scaffold materials, which absorb quickly and cannot provide good mechanical support. It can only repair defects less than 3cm, and cannot repair more than 4 tooth positions (greater than 3cm). repair of defects, especially mandibular defects spanning the central plane
[0006] The difficulty in repairing mandibul...

Method used

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  • Manufacturing method for personalized bracket for repairing of center plane across mandibular defect
  • Manufacturing method for personalized bracket for repairing of center plane across mandibular defect
  • Manufacturing method for personalized bracket for repairing of center plane across mandibular defect

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Embodiment Construction

[0032] In order to better explain the present invention, the present invention will be further explained below in combination with specific embodiments.

[0033] like figure 1 As shown, the defect is located from the mandibular right incisor to the left mandibular ramus and condyle, with a size of about 8-10cm.

[0034] Firstly, perform spiral CT scanning on the mandibular defect: the MX-8000 spiral CT produced by Philips Company is used for scanning, the scanning plane is parallel to the orbito-auricular plane, and the scanning range is from the upper orbital edge to the lower edge of the mandible to obtain the patient's original cross-section image. Then use the 3D visualization technology and the 3D reconstruction software 3DMSR (3-Dimensional Medicine Surface Rendering) independently written by Jima Fei Company to carry out 3D reconstruction of these discrete data, transform it into an image with an intuitive three-dimensional effect, and obtain the mandible in STL format...

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Abstract

The invention discloses a manufacturing method for a personalized bracket for the repairing of a center plane across mandibular defect. The method comprising the following steps: designing a repairing model for a personalized profile and an internal microstructure of an individual defect through CT scanning in combination with a curved surface reperforating way; acquiring a repair body for the defect area through a cutting algorithm; manufacturing the repair body through BOOL arithmetic design via an EBSM method; implanting a three-dimensional reticular metallic support in the mandible defect area; fixing the repair body and two bone stumps through titanium bolts; adding ossifying material and autologous bone marrow stromal cells; and stitching soft tissues and conducting implant implanting after the completion of ossifying, so as to complete denture restoration. The method provided by the invention can better promote and guide the growth of the bones, has a good synosteosis effect for the implant and the around bones, and is suitable for long-term repairing.

Description

technical field [0001] The invention relates to a manufacturing method of a tissue engineering bracket for mandibular defect repair. Background technique [0002] In recent years, maxillofacial defects, especially mandibular defects, caused by tumors, infections, traffic accidents, etc., have been increasing year by year. In Europe alone, 1.5 million people need craniofacial surgery for bone repair every year, of which a considerable number One part is surgery on the mandible. [0003] The current mandibular defect repair surgery mainly adopts autologous bone grafting and metal plate prosthetic implantation. Vascularization surgery is very difficult, resulting in insufficient blood supply to the implant, which makes it difficult to control the absorption of the autologous bone implant and affects the repair effect. When the metal plate is implanted and repaired, although the personalized customization technology based on the patient's own bone structure is relatively matur...

Claims

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Application Information

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IPC IPC(8): A61F2/28
Inventor 徐娟胡敏谭新颖刘昌奎
Owner GENERAL HOSPITAL OF PLA
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