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Effect of Scanning Techniques on Accuracy of Mandibular Fixed Detachable Prostheses

NCT07740265 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 7

Last updated 2026-07-31

No results posted yet for this study

Summary

This crossover clinical study aims to evaluate the influence of three different intraoral scanning techniques on the scanning accuracy and passive fit of mandibular implant-supported fixed detachable prostheses in completely edentulous patients. Each participant will undergo digital implant scanning using three methods: splinted scan bodies, horizontal non-calibrated scan bodies (IO Connect), and auxiliary geometric devices.

Conditions

  • Dental Prosthesis, Implant-Supported
  • Prosthodontics
  • Complete Edentulism
  • Full Arch Implant Rehabilitation

Interventions

DEVICE

Splinted Scan Body with composite

A full-arch digital implant impression will be obtained using implant scan bodies splinted with composite resin prior to scanning. The splinting procedure will provide enhanced scan body stability and will be used to minimize positional discrepancies during digital impression acquisition.

DEVICE

IO Connect Scanning Technique

A full-arch digital implant impression will be obtained using horizontal non-calibrated scan bodies (IO Connect). The horizontal scan body design will facilitate implant position recognition, digital alignment, and accurate transfer of implant coordinates throughout the digital impression procedure.

DEVICE

Auxiliary Geometric Device Scanning Technique

A full-arch digital implant impression will be obtained using 3D-printed auxiliary geometric devices attached to implant scan bodies. These auxiliary devices will provide additional geometric reference landmarks to improve stitching accuracy, reduce cumulative scanning errors, and enhance complete-arch digital impression accuracy.

Sponsors & Collaborators

  • Tanta University

    lead OTHER

Principal Investigators

  • Mostafa Hamed Mostafa Abd El-Hameed Abd El-Hameed, BDS, MSc · Faculty of Dentistry, Tanta University, Egypt

Study Design

Allocation
RANDOMIZED
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-08-08
Primary Completion
2027-04-01
Completion
2027-07-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07740265 on ClinicalTrials.gov