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Completed

NCT Number: NCT07662590

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

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.

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Key information

Conditions

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

Age range

40 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Dr. M.G. Perio and implant center

Cairo, Maadi, 11270, Egypt

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

scan ladder

Device

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

Primary outcomes

  1. technical complications

    Time frame: 18 months

    reported any events of complications in the final restoration

Secondary outcomes

  1. restoration survival

    Time frame: 18 months

    any catastrophic loss of restorations

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Important dates

Study start
2024
Primary completion
2026
Study completion
2026
First posted
Jun 23, 2026
Registry last updated
Jun 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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