Clinical Evaluation of Patient-Specific 3D-Printed Titanium Implants for Facial Reconstruction.

Background:

Facial bone defects and contour deformities may result from congenital anomalies, trauma, tumor resection, cystic lesions, or developmental deficiencies. Conventional reconstructive techniques often rely on standard implants or intraoperative modification of grafts, which may not provide optimal anatomical adaptation or aesthetic outcomes.

Recent advances in three-dimensional (3D) imaging, computer-aided design (CAD), and additive manufacturing technologies have enabled the production of patient-specific titanium implants tailored to the unique anatomy of individual patients. These implants may improve surgical precision, reduce operative time, enhance facial symmetry, and provide more predictable functional and aesthetic outcomes.

Objective:

This clinical study aims to evaluate the effectiveness, safety, and clinical performance of patient-specific 3D-printed titanium facial implants in the reconstruction and aesthetic correction of facial defects.

Methods:

Eligible adult patients presenting with facial bone defects, facial asymmetry, congenital deformities, post-traumatic defects, or aesthetic indications requiring customized facial augmentation will undergo preoperative imaging using computed tomography (CT). Patient-specific titanium implants will be designed using computer-aided design software and manufactured using 3D-printing technology.

Clinical evaluation will include assessment of implant fit accuracy, facial symmetry, aesthetic outcomes, postoperative complications, patient satisfaction, and overall treatment success. Follow-up assessments will be performed at regular intervals for up to 12 months after surgery.

Expected Outcomes:

The study is expected to demonstrate that patient-specific 3D-printed titanium implants provide accurate anatomical reconstruction, improved facial aesthetics, high patient satisfaction, and acceptable safety profiles when used for facial reconstruction and contour correction.

Inclusion criteria

• Age 18 years or older.
• Presence of facial bone defects resulting from cystic or tumoral osteolytic lesions.
• Acquired or congenital facial deformities associated with bony defects or facial asymmetry.
• Patients requiring patient-specific 3D-printed titanium implants for maxillofacial reconstruction.
• Aesthetic indications requiring custom facial implant design, including microgenia (chin retrusion).
• Ability to provide written informed consent.

Exclusion criteria

• Active pathological lesions at the time of enrollment.
• Age below 18 years.
• History of radiotherapy within 12 months prior to enrollment.
• Chronic untreated vitamin D deficiency.
• Uncontrolled diabetes mellitus.
• Inability or unwillingness to comply with follow-up requirements.