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3D-Printed Implant Overdentures: Comparing Impression Techniques

NCT07208812 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 16

Last updated 2026-01-29

No results posted yet for this study

Summary

This randomized crossover clinical trial aims to compare three different impression techniques for the construction of 3d-printed mandibular implant overdentures in completely edentulous patients. Sixteen patients will receive two mandibular implants and three overdentures fabricated using:(1) conventional open-tray implant level impression (2) functionally generated reline impression, and (3)mucostatic base with functional borders impression. Each overdenture will be worn for three months with a washout period between interventions.

The primary outcome is masticatory efficiency, assessed using a color -mixing ability test at 3,6, and9 months.

Secondary outcome is patient satisfaction, assessed using a Visual Analog Scale (VAS) at the same intervals. the study hypothesis is that the impression technique influences both chewing efficiency and patient satisfaction

Conditions

  • Edentulism

Interventions

PROCEDURE

Conventional open -tray impression

Primary impression with irreversible hydrocolloid, custom tray with open window, and final impression with silicone material around impression copings to fabricate a 3D-printed implant overdenture

PROCEDURE

Functionally generated reline impression

Interim prosthesis relieved and reline impression taken during centric closure with border molding, scanned to construct a 3D-printed implant overdenture

PROCEDURE

Mucostatic base with functional borders impression

Intraoral scan of edentulous arch, 3D-printed baseplates for occlusion rim, functional border molding, and digital workflow to fabricate 3D-printed implant overdenture

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Principal Investigators

  • Shimaa E Aboelenin · Faculty of Dentistry, Mansoura University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-01-06
Primary Completion
2027-04-30
Completion
2027-05-31

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 NCT07208812 on ClinicalTrials.gov