Mandibular and Mental Index in Implant Prosthetic Restorations

May 23, 2026 updated by: Zeynep AKGÜL, Abant Izzet Baysal University

Evaluation of Mandibular Radiomorphometric Indices in Implant Patients With Different Prosthetic Restorations

This retrospective longitudinal observational study evaluates mandibular radiomorphometric indices in patients rehabilitated with different implant-supported prosthetic restorations. Clinical and panoramic radiographic records of adult patients with dental implants were retrospectively reviewed. Mandibular index and mental index measurements were obtained from panoramic radiographs taken at baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading. The study aims to assess changes in these radiomorphometric parameters over time and to determine whether patient-, implant-, and prosthesis-related factors are associated with mandibular cortical bone-related measurements.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

186

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

  • Turkey (Türkiye)
    • Central
      • Bolu, Central, Turkey (Türkiye), 14100
        • Faculty of Dentistry, Bolu Abant İzzet Baysal University, Department of Periodontics

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

The study population consisted of adult patients who received implant-supported prosthetic rehabilitation at Bolu Abant Izzet Baysal University Faculty of Dentistry and had complete clinical and panoramic radiographic records at baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading.

Description

Inclusion Criteria:

  • Patients aged 18 years or older
  • Patients with at least one osseointegrated dental implant restored with an implant-supported prosthetic restoration
  • Availability of panoramic radiographs at baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading
  • Complete demographic, clinical, implant-related, prosthetic, and radiographic records

Exclusion Criteria:

  • Patients with uncontrolled systemic disease
  • Use of medications that may affect bone metabolism
  • History of radiotherapy to the head and neck region
  • Implant loss during the follow-up period
  • Insufficient panoramic radiographic image quality for radiomorphometric measurements
  • Incomplete clinical or radiographic records

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

Cohorts and Interventions

Group / Cohort
Single Crown Group
Patients rehabilitated with implant-supported single-crown restorations.
Fixed Partial Denture Group
Patients rehabilitated with implant-supported fixed partial denture or bridge restorations.
Removable Prosthesis Group
Patients rehabilitated with implant-supported removable prostheses.
Full-mouth Fixed Restoration Group
Patients rehabilitated with implant-supported full-mouth fixed restorations.
Splinted Crown Group
Patients rehabilitated with implant-supported splinted crown restorations.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Mandibular Index Values Over Time
Time Frame: Baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading
Mandibular index values measured on panoramic radiographs will be evaluated at baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading to assess longitudinal changes in mandibular cortical bone-related radiomorphometric parameters.
Baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Mental Index Values Over Time
Time Frame: Baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading
Mental index values measured on panoramic radiographs will be evaluated at baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading to assess longitudinal changes in mandibular cortical bone-related radiomorphometric parameters.
Baseline after prosthetic loading, 6 months after loading, and 1.5 years after loading
Association Between Prosthetic Restoration Type and Mandibular Index Values
Time Frame: 6 months and 1.5 years after prosthetic loading
Mandibular index values will be compared among patients rehabilitated with different implant-supported prosthetic restoration types, including single crowns, fixed partial dentures, removable prostheses, full-mouth fixed restorations, and splinted crowns.
6 months and 1.5 years after prosthetic loading

Collaborators and Investigators

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

Sponsor

Abant Izzet Baysal 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)

November 15, 2025

Primary Completion (Actual)

April 15, 2026

Study Completion (Actual)

May 15, 2026

Study Registration Dates

First Submitted

May 23, 2026

First Submitted That Met QC Criteria

May 23, 2026

First Posted (Actual)

May 29, 2026

Study Record Updates

Last Update Posted (Actual)

May 29, 2026

Last Update Submitted That Met QC Criteria

May 23, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • BAİBU-Perio-ZA-02

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

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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