Custom-made reconstruction plates for segmental lower-jaw defects
Official title: Patient-specific Reconstruction Plate for Alloplastic Bridging of Segmental Mandibular Defects. A Clinical and Radiographic Study.
Run by Alexandria University · NCT07320924 · Data updated 2026-11-12
This study will test custom, computer-designed jaw plates made with virtual surgical planning to repair adults with segmental lower-jaw (mandibular) defects and see how well they fit and function.
Quick facts
| Study type | Interventional |
|---|---|
| Sex | All |
| Enrollment | 14 (estimated) |
| Sponsor | Alexandria University Academic / other |
| Locations | 1 site (Alexandria, Alexandria Governorate) |
| Status | Recruiting |
| Started | January 1, 2025 |
| Main results expected | May 30, 2026 |
| Study ends | August 30, 2026 |
| Registry record updated | January 6, 2026 |
| Trial ID | NCT07320924 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with segmental mandibular continuity defects that do not involve the condyle—due to tumors, recurrent lesions, stage-III jaw osteonecrosis/sequestrectomy indications, osteomyelitis, trauma, or gunshot injuries—who are medically fit for surgery are ideal candidates.
✕Probably not a fit
Patients who are medically unfit for surgery, have defects involving the condyle that require total joint reconstruction, or have an active infection at the surgical site are unlikely to be appropriate or to benefit from this approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a prospective interventional study enrolling 14 patients with segmental mandibular continuity defects managed at Alexandria University. Each patient will receive a patient-specific reconstruction plate created with preoperative virtual surgical planning and computer-aided design/manufacturing. Clinical follow-up will record morbidity and range of mandibular excursions, and postoperative 3D radiographic analysis will measure the accuracy of the computer-guided reconstruction. The protocol excludes defects requiring condylar resection or patients with active local infection or who are medically unfit for surgery.
Why it matters
Potential benefit: If successful, patient-specific plates could improve plate fit and alignment, reduce intraoperative bending and hardware stress, and lower the risk of long-term hardware complications while improving jaw function.
How similar studies have gone: Computer-aided design/manufacturing and virtual surgical planning have previously improved accuracy in maxillofacial reconstruction, but prospective data specifically on patient-specific mandibular plates remain limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Patients with a segmental mandibular continuity defect, not involving the condyle. 2. Patients suffering from benign, locally invasive or malignant lesions that involving the lower border of the mandible. 3. Patients with recurrent lesions after resection. 4. Patients dealing with osteomyelitis or jaw osteonecrosis that is indicated for sequestrectomy. • Stage-III jaw osteonecrosis. 5. Patients with traumatic defects. 6. Patients with post-gunshot mandibular defects. Exclusion Criteria: 1. Medically compromised patients contradict the operation. 2. Patients with segmental mandibular defects that require condylar process resection 3. Patients with lateral segmental mandibular defects involving the condyle that require reconstruction using an alloplastic total joint. 4. Patients with an active infection at the site of resection.
Where it's running
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Faculty of Dentistry, Alexandria University
Alexandria, Alexandria Governorate, Egypt Recruiting
Study contacts
- Principal investigator: yehia M El-Mahallawy, Phd — Faculty of Dentistry, Alexandria University, Alexandria, Alexandria
- Study coordinator: yehia A El-Mahallawy., PhD
- Email: yehia.el-mahallawy@alexu.edu.eg
- Phone: +201007217014.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.