An interventional study of Photogramety Orbital Prosthesis and Conventional impression prosthesis in Orbital Deformity, sponsored by Tanta University. Completed at 1 site in Egypt. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2025-07-22.
Sponsored by Tanta University · Not applicable, Interventional, and Other
Two orbital prosthesis were made to the patient , using two different digital scanning methods to restore the unilateral orbital exentration , the prosthetic devices were made using medical silicon material
Statement of problem : Orbital defects which resulted from surgical removal of mucormycosis that caused by corona virus infection lead to several functional, esthetic and psychological problems for the patients.
Aim of the study : Evaluation of the accuracy of fitting surface of orbital prosthesis constructed by photogrammetry scan.
Methods : An orbital prosthesis was made using photogrammetry scanning technique as a method for making digital facial impression to obtain facial 3D model using a high resolution professional camera with image processed through 3DF Zephyr open-source software and the other orbital prosthesis was made using a conventional impression for both the defect and contralateral healthy eye , then scanned with a Degree Of Freedom (DOF) extra oral desktop scanner. 3D models of the defect sites were printed from each scanning method to act as a master cast for the orbital prosthesis fabrication. Accuracy of orbital prosthesis fitting surfaces produced from the two techniques in comparison with a facial scan as a reference scan was assessed through deviation analysis using metrology grade software (Geomagic Control X ).
Tanta University is the lead sponsor of 963 studies on the registry; 304 are open to participants now.
Of its 16 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Capture photographs of the face including the defective site by profesional camera
Other: Photogramety Orbital Prosthesis
Digital scan of a conventional impression to the defect and healthy sites, the impression was taken using silicone rubber impression material, to obtain 3D virtual model using an extraoral desktop scanner.
Other: Conventional impression prosthesis
Using 2D photographs to abtain 3D model of orbital defect anatomy
Conventional impression to an orbital defect then scaning the impression using desktop scanner
Accuracy of fitting surface of orbital prosthesis
Measurements of accuracy: Measuring surfaces mesh deviation between the two orbital prosthesis fitting surfaces obtained using two types of scanning methods and a reference facial scan obtained using creality raptor (CR) scanner. 1. The STL file of the facial scan and the STL files of the two orbital prosthesis fitting surfaces were imported separately to the metrology grade software program( Geomagic control x) . 2. The STL file of the facial scan was selected and considered to be the reference data , and the STL files of the prosthesis fitting surfaces was selected and considered to be the measured data . 3. The STL file of the measured data was manually superimposed onto the STL file of the reference data . 4. A color surface map appeared on the reference data which indicate the directional mesh deviation result between the superimposed scans . 5. The color map scale was adjusted .
Time frame: Baseline or Day 1
Plan to share: No — for the patient privacy
No publications or documents are linked to this record.
This study is completed, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Tanta University