Zygoma Augmentation With 3D Printed Bioactive Glass-Ceramic Implant

Facial bone structure significantly influences aesthetic outcomes in reconstructive surgery. The zygoma, a key facial component, plays a central role in defining facial contour. Prior research has shown that nonresorbable bone grafts are used to maintain structural integrity. However, gaps remain in achieving optimal integration without complications. Traditional graft materials often lack bioactivity or radiopacity. This uncertainty drove the search for alternatives that mimic natural bone chemistry. Bioactive glass-ceramics have emerged as promising candidates. Their chemical similarity to bone suggests potential for integration. Yet, no prior work had resolved how to apply these materials in patient-specific designs.

This clinical case aimed to evaluate a novel approach for zygoma reconstruction. The specific problem addressed was the need for a graft material that integrates well with bone and avoids radiographic artifacts. The motivation stemmed from limitations in current graft materials. The goal was to test a 3D printed CaO-SiO2-P2O5-B2O3 glass-ceramic implant. This material was chosen due to its reported bioactivity and radiopacity. The study focused on whether this implant could maintain position and promote fusion. The clinical application sought to validate safety and effectiveness. The outcome would inform future use in reconstructive surgery.

The study involved a single clinical case of zygoma augmentation. A 3D printed BGS-7 implant was designed using CAD-CAM technology. The implant was customized to fit the patient's anatomical needs. The material used was a CaO-SiO2-P2O5-B2O3 glass-ceramic. The implant was placed in the zygoma defect during surgery. Follow-up assessments were conducted using cone-beam computed tomography. Radiographic images were analyzed for displacement and integration. The study monitored the implant's stability and fusion with surrounding bone.

The 3D printed BGS-7 implant remained in place during follow-up. No displacement was observed from the initial surgical site. Radiographic evaluation showed a gap between bone and implant. This gap was filled with radiopaque material, suggesting fusion. The radiopacity matched that of bone, with no metallic artifacts. The implant's chemical similarity to bone supported integration. The results indicated successful bony fusion over time. The implant demonstrated safety and effectiveness in this case.

The authors propose that BGS-7 is a viable graft material for zygoma defects. The implant's stability and radiopacity were confirmed in this case. The bioactive properties of BGS-7 suggest integration with bone. No displacement was observed, indicating proper placement. The radiographic findings implied successful fusion with surrounding bone. The study's results support the use of 3D printed BGS-7 in reconstructive surgery. The clinical case demonstrates the material's potential for facial reconstruction. The authors suggest further evaluation in additional cases.