An interventional study of 3D Printed Digital Surgical Guide in Edentulous Maxilla, Atrophic, sponsored by Tanta University. Completed at 1 site in Egypt. Open to participants aged 20 Years to 60 Years. Per ClinicalTrials.gov, last updated 2026-09-29.
Sponsored by Tanta University · Not applicable, Interventional, and Treatment
The aim of this clinical study is to evaluate the accuracy of placing pterygoid implants using custom-made surgical guides in patients with atrophied posterior maxilla. The study focuses on measuring how closely the actual implant position matches the virtual preoperative plan in terms of angle and distance.
Rehabilitation of the atrophic posterior maxilla remains a surgical challenge. This study utilizes pterygoid implants as a graftless solution. For each participant, a digital workflow is followed: a cone-beam computed tomography (CBCT) scan and an intraoral scan are performed to design a custom-made surgical guide. Following implant placement, a postoperative CBCT is obtained. The accuracy is then evaluated by superimposing the planned and actual implant positions to calculate the coronal, apical, and angular deviations.
30 studies on the registry are indexed under Atrophic Maxilla; 11 are open to participants now.
This study's enrollment of 9 is below the median of 16 across 27 interventional studies indexed under Atrophic Maxilla.
Browse Atrophic Maxilla studies →Tanta University is the lead sponsor of 1,010 studies on the registry; 321 are open to participants now.
Of its 15 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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The criteria were revised on the registry on Sep 29, 2026. See what changed
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Patients with atrophic posterior maxilla receiving pterygoid implants using a custom-made digital surgical guide to evaluate placement accuracy.
Device: 3D Printed Digital Surgical Guide
A custom-made surgical template designed using technology based on the patient's CBCT and intraoral scans. It is used to guide the surgical drills and the placement of pterygoid implants according to a pre-planned virtual position to ensure accuracy
Accuracy of custom-made surgical guide
Evaluation of the deviation between the virtual preoperative plan and the actual postoperative implant position. This includes angular (measured in angle degrees) and linear deviation (measured in mm).
Time frame: Immediately postoperative
Plan to share: Undecided
No publications or documents are linked to this record.
Ran from Aug 2024 to primary completion in Aug 2025, 11 months.
Of 20 interventional studies with no phase under Atrophic Maxilla, half reached primary completion within 21 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 32. This study's 11 months is below that.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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