Computer-aided design and manufacture and rapid prototyped polymethylmethacrylate reconstruction

Area of Science:

• Biomaterials Engineering
• Medical Device Design
• Craniofacial Surgery

Background:

• Craniofacial bone defects require precise reconstruction.
• Traditional methods may pose risks like exothermic tissue damage.
• Need for patient-specific implant solutions.

Purpose of the Study:

• To evaluate computer-aided design (CAD) and rapid prototyping (RP) for polymethylmethacrylate (PMMA) craniofacial reconstruction.
• To assess the safety and efficacy of custom PMMA implants.
• To improve patient outcomes and satisfaction in craniofacial defect repair.

Main Methods:

• Utilized CAD and RP techniques for individualized PMMA implant fabrication.
• Applied 3D reconstruction and operative design using computer software.
• Reconstructed craniofacial defects in 11 patients with custom implants.

Main Results:

• Achieved accurate determination of implant shape, size, and placement.
• Prefabricated custom implants significantly improved treatment accuracy.
• Reported no complications (infection, seroma, extrusion, irregularity) in 11 patients.
• All patients expressed satisfaction with aesthetic and functional outcomes.

Conclusions:

• Prefabricated PMMA implants are safe and effective for various craniofacial defects with adequate soft tissue coverage.
• CAD and RP enable the creation of customized implants that enhance patient comfort and resemble original appearance.
• The proposed algorithm facilitates the design of patient-specific implants for craniofacial reconstruction.