Manufacturing method for jaw defect individual restoration

Abstract

The invention relates to the fields of computer-aided technology and maxillofacial plastic medical apparatus and instruments, in particular to an optimal design and manufacturing method for a jaw defect individual restoration. The optimal design and manufacturing method is characterized by comprising the following steps: conducting CBCT scanning on the maxillofacial part of a patient, obtaining DICOM data, guiding the data into three-dimensional modeling software-MIMICS (Materialise, Belgium) to reconstruct a jaw three-dimensional model, designing the individual restoration, designing models of a plurality of virtual screw according to the size of retention screws supposed to be adopted, then moving the models to the appropriate positions of the jaw to simulate the situation to the screw retention restoration, obtaining Von Mises stress and a strain nephogram, and manufacturing entities of various materials through the fast forming technology. The jaw defect individual restoration made through the manufacturing method for the jaw defect individual restoration has good performance in biomechanical properties including breaking strength, stress-strain distribution, the service life and the like. So far, a patient with upper and lower jaw defects accepting an implanting operation is observed for two years, and no bad complications of fracture, exposure and the like happen.

Description

technical field [0001] The invention relates to the field of computer-aided technology and maxillofacial plastic medical equipment, in particular to an optimal design and manufacturing method of a personalized prosthesis for jaw defect based on cone beam CT (CBCT). [0002] Background technique [0003] Large-area jaw defects are mostly caused by severe trauma, infection, or tumor resection. Mild cases lead to facial deformities, and severe cases lose physiological functions such as chewing, language, and swallowing, which greatly affect the patient's oral and jaw system functions and natural appearance. and mental health. Traditional repair methods for jaw defects include autologous free / pedicled bone graft, allogeneic bone graft, non-vascularized bone graft, vascularized bone graft, and distraction osteogenesis. These methods have their own advantages and disadvantages and clinical The indications all need to rely on the experience of the surgeon, the postoperative effec...

AI Technical Summary

Problems solved by technology

However, it still has shortcomings such as short service life of the prosthesis, poor recovery function, and obvious foreign body sensation, especially in cases of maxillary and mandibular defects involving occlusal function, poorly designed prostheses may break or be exposed in a short period of time, failure of restorative treatment

In the routine design, only rely on the clinical experience of specialists and engineers to complete the shape design, without objective and quantitative evaluation means, the final clinical effect is not ideal

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