Mechanical Complications of Full Arch Monolithic Zirconia Restorations to Restore Completely Edentulous Patients Scanned by Horizontal Scan Bodies; A Case Series

June 17, 2026 updated by: tasneem gamal youssef el mashad, Cairo University
the study is concerned with assessing retrospectively the survival and complication rates of monolithic zirconia implant-supported fixed full arch dental restoration scanned using scan ladder scan body over a follow-up period of 1 year.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Egypt
    • Maadi
      • Cairo, Maadi, Egypt, 11270
        • Dr. M.G. Perio and implant center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • - Any completely edentulous patient (mandible) with an old satisfactory denture requiring an implant-supported restoration.
  • Patients aged from 40 to 70, able to sign an informed consent will be considered eligible for this trial.
  • Implant sites must allow the placement of four implants.
  • Non- heavy Smokers will be included (smoking up to 10 cigarettes/day)
  • In case of post-extractive sites, they must have been healed for at least 3-month before being treated in the study.
  • Patients with no systemic condition that may interfere with implant placement (e.g., Immunosuppressed or immunocompromised patients, patients under treatment of intravenous amino-bisphosphonates)

Exclusion Criteria:

  • - Patients with poor oral hygiene and motivation.
  • Pregnancy or nursing.
  • Drug abusers.
  • Psychiatric problems or unrealistic expectations.
  • Patients with infection and or inflammation in the area intended for implant placement.
  • Patients participating in other studies, if the present protocol cannot be properly adhered to.
  • Patients with signs of hyperactive muscles.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: using scan ladder scan bodies
Restorations were fabricated using fully digital workflow from scanning to fabrication. Scanning was done using intraoral scanner and horizontal scan bodies "scan ladder scan bodies".
Device: scan ladder
Prosthetic steps with a digital workflow by placing horizontal scan bodies "scan ladder" and using of intraoral scanner "Medit i900" will be done. The final restoration is designed and a monolithic zirconia full arch titanium free restoration was milled and delivered after ensuring passivity and occlusion.
Other Names:
  • horizontal scan body

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
technical complications
Time Frame: 18 months
reported any events of complications in the final restoration
18 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
restoration survival
Time Frame: 18 months
any catastrophic loss of restorations
18 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cairo University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2024

Primary Completion (Actual)

June 1, 2026

Study Completion (Actual)

June 15, 2026

Study Registration Dates

First Submitted

June 17, 2026

First Submitted That Met QC Criteria

June 17, 2026

First Posted (Actual)

June 23, 2026

Study Record Updates

Last Update Posted (Actual)

June 23, 2026

Last Update Submitted That Met QC Criteria

June 17, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 123678

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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