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Passive Fit of Implant-Supported Frameworks: Digital vs Conventional Impressions

NCT07778199 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 8

Last updated 2026-08-21

No results posted yet for this study

Summary

This randomized crossover clinical trial compares the passivity of fit of complete-arch mandibular implant-supported frameworks fabricated using three impression techniques: a non-calibrated splinted digital scan body system (IO-Connect), a Reverse Scan Body (RSB) digital impression technique, and a conventional splinted open-tray impression technique. Eight completely edentulous patients each receiving four mandibular implants will be included. Passivity of fit will be evaluated clinically using the Sheffield one-screw test and radiographically using intraoral periapical radiographs obtained with the parallel technique.

Conditions

  • Dental Implants
  • Edentulous Jaw
  • Passive Fit

Interventions

PROCEDURE

IO-Connect Digital Impression

Digital impression of the mandibular arch obtained using IO-Connect non-calibrated splinted scan bodies to fabricate the implant-supported framework for Group I.

PROCEDURE

Reverse Scan Body Digital Impression

Digital impression obtained using the Reverse Scan Body (RSB) technique, involving extraoral scanning of scan bodies and superimposition with intraoral tissue scans, to fabricate the implant-supported framework for Group II.

PROCEDURE

Conventional Splinted Impression

Conventional splinted open-tray impression using polyvinyl siloxane material and Type IV dental stone to fabricate the implant-supported framework for Group III.

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Principal Investigators

  • Fatma A El-Waseef, PhD · Mansoura University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
35 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-01-25
Primary Completion
2026-10-25
Completion
2027-01-25

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 NCT07778199 on ClinicalTrials.gov