Mandibular reconstruction scaffold

Abstract

The invention discloses a mandibular reconstruction scaffold. The mandibular reconstruction scaffold has an irregular structure and comprises a first cross section and a second cross section, whereinan oblique angle between the first cross section and the second cross section is 30 to 60 degrees; two sides of the first cross section are respectively provided with at least one first nail hole; each first nail hole penetrates through the first cross section and the second cross section and is used for fixing the mandibular reconstruction scaffold onto a first target; and at least one second nail hole is arranged on the first cross section and used for fixing the mandibular reconstruction scaffold onto a second target. The mandibular reconstruction scaffold provided by the invention can reconstruct a mandible in a manner of compound vascularized bone graft, and can effectively reduce occurrence of serious complications like infection, rejection and stress shielding caused by mandibular reconstruction with completely-heterogeneous materials.

Description

technical field [0001] The invention relates to the technical field of oral and maxillofacial repair and reconstruction, in particular to a mandibular reconstruction support. Background technique [0002] Vascularized autologous bone grafting: At present, this method is widely used for mandibular reconstruction, mainly including fibula and ilium. However, the vertical height of the fibula is insufficient, and it is difficult to complete the implantation at the same time, and the horizontal length of the ilium is insufficient to be used for a large-scale mandibular defect across the midline. Some teams have used fibula double stacking, Onlay bone grafting, or distraction osteogenesis to increase vertical bone volume, but these methods not only increase the trauma of the donor site, but also increase the difficulty of surgery and treatment cycle, increasing the pain of the patient. [0003] Reconstruction of the mandible with all-heterogeneous materials: With the maturity of ...

AI Technical Summary

Problems solved by technology

However, regardless of the excellent physical and chemical properties of various materials, or the proficiency of 3D printing technology, it is impossible to avoid the fate of infection, exposure, and eventual removal of implants after mandibular reconstruction with all-heterogeneous materials.

The main reason is that the oral cavity is a bacterial environment (a second-class wound), the oral mucosa is thin, and the tight suture of the soft tissue cannot be performed, resulting in saliva leakage, and the all-heterogeneous prosthesis has no anti-infection ability, resulting in rejection of infection

At the same time, the design of the heterogeneous prosthesis does not take into account the biomechanical state of the mandible. Under the action of strong masticatory force, the phenomenon of stress shielding is obvious, which leads to the absorption of surrounding bone, and the loosening and falling off of titanium nails.

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