Comparing metal versus resin surgical guides for placing zygomatic implants in severely atrophic upper jaws
Official title: Evaluation of Zygomatic Implant Placement Accuracy Using Fully Metallic vs Resin-based Surgical Guides in Severely Atrophic Maxilla.
Run by Future University in Egypt · NCT07551024 · Data updated 2026-11-12
This trial will test whether fully metallic surgical guides or resin 3D‑printed guides give more accurate implant placement for adults who need zygomatic implants because of severe upper‑jaw bone loss.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 4 (estimated) |
| Sponsor | Future University in Egypt Academic / other |
| Locations | 1 site (New Cairo, Cairo Governorate) |
| Status | Recruiting |
| Started | November 3, 2025 |
| Main results expected | June 2026 |
| Study ends | June 2026 |
| Registry record updated | May 7, 2026 |
| Trial ID | NCT07551024 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18 or older with a severely atrophic maxilla who are indicated for zygomatic implant‑supported fixed prostheses, have adequate mouth opening, and can consent and attend follow‑ups are ideal candidates.
✕Probably not a fit
People with uncontrolled systemic disease, active sinus or nasal infection, prior head/neck radiotherapy or bisphosphonate therapy, heavy smoking, severe parafunctional habits, pregnancy, or psychiatric conditions that affect compliance are unlikely to benefit or be eligible.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults with severely atrophic maxilla who are planned for zygomatic implant‑supported fixed prostheses will be assigned to have implants placed using either a resin (3D‑printed) static surgical guide or a fully metallic static surgical guide. Surgeons will use preoperative digital planning to define implant positions, and the chosen guide will be used during the operation to direct implant placement. Postoperative imaging will be used to measure the difference between planned and actual implant positions to quantify accuracy, and patients will attend follow‑up visits to monitor healing and prosthetic outcomes. The trial focuses specifically on placement accuracy and immediate surgical performance rather than long‑term implant survival.
Why it matters
Potential benefit: If successful, a more accurate guide could reduce placement errors, lower the risk of complications, and improve fit and function of fixed prostheses for people with severe upper‑jaw bone loss.
How similar studies have gone: Standard guided‑surgery approaches have improved accuracy for many dental implants, but fully metallic static guides for zygomatic implants are relatively new and have limited published evidence.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients ≥18 years with severely atrophic maxilla. * Acquired maxillary defects resulting from trauma, pathology, or previous surgical resection. * Indicated for zygomatic implant-supported fixed prosthesis. * Sufficient mouth opening for zygomatic implants placement. * Patients willing to sign informed consent and attend follow-ups. Exclusion Criteria: * Uncontrolled systemic disease affecting healing (e.g., uncontrolled diabetes, etc). * Heavy smokers * Previous radiotherapy or bisphosphonate therapy. * Active sinus or nasal infection. * Severe parafunctional habits (e.g., bruxism). * Pregnant or lactating women. * Patients with psychiatric disorders affecting compliance.
Where it's running
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Future University in Egypt
New Cairo, Cairo Governorate, Egypt Recruiting
Study contacts
- Principal investigator: mohamed safwat eid, bachelor — future unversity in egypt
- Study coordinator: ahmed abozekry associate professor of oral and maxillofacial surgery at FUE, associate professor
- Email: Ahmed.Kamal@fue.edu.eg
- Phone: 00201012162020
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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.