A Comparison of Accuracy Between Different Facial Scanning Techniques

NCT07557212 | Not Yet Recruiting DMC

• 1 other identifier: FDASU-REC IR/M 122503
• Study Type: interventional
• Target: 60
• Locations: 0 countries
• Sites: N/A

Brief Summary

Conventional alginate impressions are still a burden to both the patient and the operator especially in extraoral maxillofacial rehabilitations cases. Nowadays face scanners are becoming more popular with their increased accuracy in taking facial scans, facilitating the digital workflow. This study will be done to investigate the accuracy of three different face scanning techniques; stationary, handheld and mobile application techniques. A number of sixty volunteers will be recruited. Conventional facial impressions will be made for each participant and the resulting casts will be desktop scanned to act as the control group. Three face scanning techniques will be used for each participant; stationary (Ray face scanner), handheld (Shining 3d face scanner) and mobile phone applications (Heges; Maerk Simonik). The STL files will be compared to that of the control group for comparison of accuracy in the terms of Trueness and Precision.

Conditions

Facial Neoplasms

Keywords

face scanning

Outcome Measures

Primary Outcomes (1)

• accuracy measurement

  Inter-landmark distances will be digitally measured to assess three facial regions-upper, middle, and lower face-and categorized into vertical and horizontal dimensions. This boundary will be replicated on each of the experimental scans using a best-fit alignment technique. For each distance, trueness will be calculated as the mean absolute deviation from the reference measurements across all scans for each modality. Precision will be assessed by computing the standard deviation of the repeated measurements for each distance.

  7 months

Study Arms (3)

Handheld scanner

EXPERIMENTAL

A series of scans will be taken each session took about 35 seconds. Scans will be captured according to manufacturer calibration protocols, processed in HD mode, and exported as PLY files and superimposed on the reference scan.

Procedure: portable scanning

stationery scanner

EXPERIMENTAL

The scanning duration will be approximately 0.5 seconds per scan. The scan will be taken following manufacturer guidelines, and scans will be exported in PLY format after HD processing and superimposed on the reference scan.

Procedure: stationery scanning

Mobile face scanning application

EXPERIMENTAL

A tablet stand will be used for stability.

Procedure: mobile app scanning

Interventions

portable scanning PROCEDURE

face scanning will be made using a portable face scanner

Handheld scanner

stationery scanning PROCEDURE

ace scanning will be made using a stationery face scanner

stationery scanner

mobile app scanning PROCEDURE

ace scanning will be made using a mobile face scanning app

Mobile face scanning application

Eligibility Criteria

• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Those who completed growth

You may not qualify if:

• Men with beards.
• Those with maxillofacial deformity

Sponsors & Collaborators

• Ain Shams University: lead

MeSH Terms

Conditions

Facial Neoplasms

Condition Hierarchy (Ancestors)

Head and Neck Neoplasms; Neoplasms by Site; Neoplasms

Study Officials

• Ahmed Mohamed, MD

  Faculty of dentistry, ain shams university

  PRINCIPAL INVESTIGATOR

Central Study Contacts

ahmed Mostafa Mohamed, MD

CONTACT

01111191337; ahmedmostafa@dent.asu.edu.eg

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: CARE PROVIDER, OUTCOMES ASSESSOR
• Masking Details: Single blinding will be done for the outcome assessor.
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate professor of Oral and Maxillofacial prosthodontics-Faculty of Dentistry- Ain Shams university

Model Details: Participants will be divided into three groups;(I),(II) and(III).In all groups; 14 landmarks will be taken as reference points. A reference scan will be acquired in the form of a cast driven through alginate impression, then the cast will be scanned by desktop scanner. Scanning will be exported as a standard tessellation language (STL).Three scanning modalities will be tested. All scans will be conducted by the same operator in identical lighting, temperature (24°C), pressure (760 mmHg), and humidity (45%) conditions. In all scans, the head position will be standardized by a head-chin rest. Group I: Handheld scanner (Metismile; Shining 3D, China).Group II: Desktop scanner (RAYFace v2.0; Ray Co., Korea).Group III: Mobile face scanning (Heges; Marek Simonik) (iPad Pro X, Apple Inc., Cupertino, CA) .A tablet stand will be used for stability. An experienced single calibrated operator is going to do all the scans for each technique.

Study Record Dates

• First Submitted: April 23, 2026
• First Posted: April 29, 2026
• Study Start: May 2, 2026
• Primary Completion (Estimated): October 1, 2026
• Study Completion (Estimated): November 1, 2026
• Last Updated: May 7, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP
• Time Frame: 6 months