An interventional study of 3D Printed Digital Surgical Guide in Atrophic Posterior Maxilla, sponsored by Tanta University. Completed at 1 site in Egypt. Open to participants aged 20 Years to 60 Years. Per ClinicalTrials.gov, last updated 2026-09-25.
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.
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The patients recruited for the study were selected according to the following criteria:
Exclusion Criteria:
1. Patients with uncontrolled systemic disease 2. Previous chemotherapy and/or antiresorptive agents 3. Heavy smoking (e.g., two packs per day)
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 custam made surgical guide
Evaluation of the deviation between the virtual preoperative plan and the actual postoperative implant position. This includes angular and linear deviation
Time frame: Immediately postoperative
Plan to share: Undecided
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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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Tanta University