Accuracy of Photogrammetric Three-Dimensional Facial Models Reconstruction Compared With Direct Anthropometry

March 20, 2025 updated by: Assem Hammas, Al-Azhar University
Accuracy of Two Different Photogrammetric Software for Three Dimensional Facial Model Reconstructions Compared with Direct Facial Anthropometry.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

50

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
      • Assiut, Egypt
        • Faculty of Dental Medicine, Al-Azhar University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

This study will be carried out on fifty volunteers, selected from outpatient clinic at Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Assiut branch; aged 18 years or older.

Description

Inclusion Criteria:

  • Participants aged 18 or older

Exclusion Criteria:

  • Presence of:

    1. Extensive facial hair (beards).
    2. Significant facial defects.
    3. Surgical scars.
    4. Neuromuscular disorders that may hinder stability of head during image acquisition.
    5. Accessories that could interfere with image acquisition.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Direct facial anthropometry group
first photogrammetric software group
second photogrammetric software group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Accuracy of Photogrammetry in Generating 3D Facial Models - Linear Measurements
Time Frame: Baseline (procedure)
  • A 3D model was generated for each volunteer using photogrammetry software. Anthropometric linear measurements was taken using a digital caliper, and photogrammetric linear measurements was extracted from the 3D model.
  • Two LEGO® blocks with uniform dimensions were attached to the participants' faces to scale the 3D model to actual metric dimensions.

Unit of Measure: millimeters(mm)
Baseline (procedure)
Accuracy of Photogrammetry in Generating 3D Facial Models - Angular Measurements
Time Frame: Baseline (procedure)
  • This outcome measure focuses on the accuracy of photogrammetry in capturing and reproducing angular measurements of facial features.
  • Volunteers' 3D facial models were generated using photogrammetry software from multiple photos.
  • Two LEGO® blocks with uniform dimensions were attached to the forehead and cheek for scaling and reference. Angular measurements, based on these blocks, were extracted from the 3D model. The measurements were compared to validate the method's precision in reproducing angular dimensions.

Unit of Measure: Degrees (°)
Baseline (procedure)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Al-Azhar University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 1, 2024

Primary Completion (Actual)

November 1, 2024

Study Completion (Actual)

January 1, 2025

Study Registration Dates

First Submitted

July 17, 2023

First Submitted That Met QC Criteria

March 20, 2025

First Posted (Actual)

March 27, 2025

Study Record Updates

Last Update Posted (Actual)

March 27, 2025

Last Update Submitted That Met QC Criteria

March 20, 2025

Last Verified

March 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • AlAzharU-AZUD

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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