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Individually Prefabricated Prosthesis for Maxilla Reconstruction
Sekou Singare1,2, Yaxiong Liu3, Dichen Li3
1Key Laboratory of Biomedical Information Engineering of the Ministry of Education, and Institute of Biomedical Engineering, Xi'an Jiaotong University, Xi'an, China.
Summary
Custom-made prostheses fabricated using rapid prototyping and reverse engineering improve maxillofacial surgery outcomes. This technology enhances fit, reduces surgical time, and increases predictability for reconstructing bone defects.
Area of Science:
- Biomedical Engineering
- Oral and Maxillofacial Surgery
- Medical Device Manufacturing
Background:
- Intraoperative implant modeling for maxillofacial defects can lead to unpredictable esthetic results, increased invasiveness, and longer surgery durations.
- Modern manufacturing technologies offer potential solutions for improving maxillofacial surgery outcomes.
Purpose of the Study:
- To evaluate the effectiveness of custom-made maxillary prostheses fabricated using rapid prototyping (RP) and reverse engineering (RE) for reconstructing large maxillofacial bone defects.
Main Methods:
- Acquisition of medical imaging data to create a 3D computer model of the bony defect.
- Utilizing RE software and computer-aided design (CAD) to generate a prosthesis model.
- Employing RP technology to produce a physical prosthesis model for precise fit evaluation.
- Direct use of the prosthesis pattern in investment casting for titanium model fabrication.
Main Results:
- Custom prostheses demonstrated a perfect fit with the bone defects during intraoperative use.
- The application of this method resulted in a reduction of overall surgery time.
- Successful reconstruction of large maxillary bone defects in two clinical cases.
Conclusions:
- Prefabrication of custom prostheses using advanced manufacturing technologies like RP and RE is an effective approach for maxillofacial defect reconstruction.
- This method enhances surgical precision and efficiency, leading to improved patient outcomes.