Self-locking segmentation design method for maxilla defect prosthesis

A prosthetic and self-locking technology, applied in bone implants, metal processing equipment, 3D printing, etc., can solve the problems of prolonging the recovery of oral dysfunction, affecting the effect of bone defect repair and restoration of appearance

Inactive Publication Date: 2020-11-10
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] If the prosthesis is simply divided into several pieces and then implanted separately, although the above problems can be solved, during the restoration process, the patient's oral activities may cause slippage between the divided pieces, which will affect the patient's bone defect repair Effect and appearance recovery, and will greatly prolong the recovery of patients with oral dysfunction

Method used

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  • Self-locking segmentation design method for maxilla defect prosthesis
  • Self-locking segmentation design method for maxilla defect prosthesis

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Experimental program
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Embodiment Construction

[0009] 1. According to the difference in the shape of the maxillary defect in different patients, on the premise of ensuring the smooth implantation of the prosthesis during the operation, divide the prosthesis into 2-6 pieces.

[0010] 2. The segmentation principle is to ensure that the outer edge of the restoration can be smoothly aligned with the shape of the patient's defect edge, and the segmentation plane is located near the surgical incision to avoid segmentation in the concave part of the restoration.

[0011] 3. The curvature of each part on the surface of the restoration is consistent with the corresponding curvature of the maxilla in the patient's healthy state.

[0012] 4. If figure 1 As shown in Fig. 1, a "falcon" or "Ω" type partition design is adopted between two adjacent restorations.

[0013] 5. There is a groove-shaped design on the contact surface of the two partition blocks of the restoration, and the inclination angle of each raised part with the bottom s...

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Abstract

The invention discloses a self-locking segmentation design method for a maxilla defect prosthesis. The invention relates to a mechanical self-locking personalized design method for a maxilla defect prosthesis stent. The method comprises the following step of carrying out 2-6-block segmentation operation on the prosthesis stent, wherein the contact tangent planes of two adjacent blocks adopt falconor omega type bayonet structure design. The convex section of a convex part of the prosthesis has an inclination angle of 50-85 degrees, and a concave part is complementary with the convex part in shape and has the same inclination angle of 50-85 degrees. Therefore, the whole stent can be repaired and tightly fixed so as to avoid slippage and looseness in a bone defect repairing process; and further, regeneration and repair of maxilla defects of patients and recovery of oral functions of the patients are accelerated.

Description

technical field [0001] The invention relates to a self-locking segmentation design method of a maxillary defect prosthesis. Background technique [0002] Maxillary defect is the most common clinical maxillofacial deformity, accounting for more than 85% of the incidence of maxillofacial defects. In addition to directly causing facial deformities, maxillary defects can also cause severe functional impairments in mastication, swallowing, and language. The treatment of maxillary bone defects is usually to design and manufacture bone defect restorations and implant the defect parts through surgery, so that the oral implants can achieve mechanical support, and then achieve a good restoration of facial appearance. [0003] When constructing a prosthesis for a patient clinically, it is first necessary to perform a computed tomography CT scan on the patient's maxilla; then restore the precise shape of the patient's maxillary defect through the three-dimensional reconstruction of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28
CPCA61F2/2803A61F2002/2835A61F2002/30985
Inventor 黄忠兵杨冰尹光福
Owner SICHUAN UNIV
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