Dimensional accuracy of computer-aided design/computer-assisted manufactured orbital prostheses

Area of Science:

• Biomedical Engineering
• Craniofacial Reconstruction
• Digital Dentistry

Background:

• Accurate orbital prostheses are crucial for restoring facial aesthetics and function.
• Traditional methods for fabricating orbital prostheses can be time-consuming and may lack precision.
• Advancements in digital technologies offer potential for improved prosthetic fabrication.

Purpose of the Study:

• To evaluate the dimensional accuracy of orbital prostheses fabricated using a computer-aided design/computer-assisted manufacturing (CAD/CAM) workflow.
• To assess the clinical applicability of a CAD/CAM system for creating patient-specific orbital implants.

Main Methods:

• Computed tomography (CT) scans were used to create 3D models of orbital regions.
• Selective laser sintering (SLS) produced surface prototypes for prosthesis fabrication.
• 31 linear measurements were taken to compare prosthesis dimensions with contralateral anatomy.

Main Results:

• Orbital prostheses exhibited similar vertical, transversal, and oblique dimensions compared to the original models.
• No significant transverse or oblique displacement of the prostheses was observed.
• Dimensional accuracy suggests minimal facial asymmetry post-fabrication.

Conclusions:

• The CAD/CAM system demonstrated high dimensional accuracy for orbital prostheses.
• The digital workflow is suitable for clinical application in orbital reconstruction.
• The technology holds potential for improving patient outcomes in craniofacial defect management.