Trueness of Intra-Oral Scanners Compared to an Extra-Oral Scanner for Scanning of Mandibular Edentulous Impressions

NCT07740798 | Not Yet Recruiting DMC

• 1 other identifier: OOC-8-25-6
• Study Type: interventional
• Target: 9
• Locations: 0 countries
• Sites: N/A

Brief Summary

the relative accuracy of different intraoral scanner types specifically for capturing the complex morphology of edentulous arches, including peripheral borders and mobile tissues, remains an area of investigation, with conflicting reports in the literature. The purpose of this study is to compare the accuracy of different intraoral scanners with a laboratory scanner for digitizing impressions of edentulous mandible. Completely edentulous patients will be gathered; final impressions will be taken for them using zinc oxide \& eugenol impression material then they will be scanned with intra oral and extra oral scanners for indirect digitalization. Scans will be superimposed and compared using a software program for analysis for accuracy in the form of trueness

Conditions

Edentulous Jaw

Outcome Measures

Primary Outcomes (1)

• trueness assessment of impression techniques for mandibular edentulous arches

  Assessment of trueness of Digital impression of the mandibular edentulous arch using intra oral scanner will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness in relation to desktop scanner. Root mean square of trueness in m.m will be reported.

  3 months

Study Arms (1)

Digital impression of the mandibular edentulous arch

EXPERIMENTAL

Digital impression of the mandibular edentulous arch will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness.

Other: Digital impression of the mandibular edentulous arch

Interventions

Digital impression of the mandibular edentulous arch OTHER

Digital impression of the mandibular edentulous arch will be made by MEDIT i600 scanner (Medit Corp. Seoul, South Korea) followed by another digital impression of the same arch using Aoralscan scanner (Shining 3D Tech. Co., Ltd. Hangzhou, China). Both impressions will be compared to each other in terms of trueness.

Digital impression of the mandibular edentulous arch

Eligibility Criteria

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

You may qualify if:

• edentulous patients
• last teeth extraction 6 months before the impression procedures

You may not qualify if:

• un cooperative patients
• Neuromotor disorders
• Parkinsonism
• Tremors

Sponsors & Collaborators

• Ain Shams University: lead

MeSH Terms

Conditions

Jaw, Edentulous

Condition Hierarchy (Ancestors)

Jaw Diseases; Musculoskeletal Diseases; Stomatognathic Diseases; Mouth, Edentulous; Mouth Diseases; Tooth Diseases

Central Study Contacts

Ahmed Mohamed, MD

CONTACT

01111191337; ahmedmostafa@dent.asu.edu.eg

Ahmed Mohamed, MD

CONTACT

01111191337; ahmedmohameddodo85@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Masking Details: the outcome assessor ; the one responsible for trueness assessment on the software will be blinded
• Purpose: HEALTH SERVICES RESEARCH
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate professor of Oral and Maxillofacial prosthodontics-Faculty of Dentistry- Ain Shams university

Model Details: final impressions will be taken for the participants using zinc oxide \& eugenol impression material then they will be scanned with intra oral and extra oral scanners for indirect digitalization. Scans will be superimposed and compared using a software program for analysis for accuracy in the form of trueness.

Study Record Dates

• First Submitted: July 14, 2026
• First Posted: August 3, 2026
• Study Start: July 15, 2026
• Primary Completion (Estimated): October 1, 2026
• Study Completion (Estimated): October 15, 2026
• Last Updated: August 4, 2026

Record last verified: 2026-08