NCT06872177

Brief Summary

Background: When placing a dental implant, it is not always possible to place it exactly in the same position as the tooth that it replaced. That might be because of how the gums and mouth are shaped, since some bone is always lost after a tooth is extracted. Researchers want to study the records of people who have had dental implants. They want to check to see how much difference there is between how the implant is positioned and how the same tooth on the other side is positioned. They also want to compare how the implant is positioned compared to the tooth it replaced, when that is possible in the dental record. Study design: This study will not enroll any participants. The researchers will search the database of patient records at the study clinic to find people who have had dental implants of a single molar tooth. Then they will look at them to find records that include good images that they can use to compare the implant and tooth positions. Researchers will then analyze the findings and write a review article.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
400

participants targeted

Target at P75+ for all trials

Timeline
12mo left

Started Feb 2026

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress21%
Feb 2026May 2027

First Submitted

Initial submission to the registry

March 6, 2025

Completed
6 days until next milestone

First Posted

Study publicly available on registry

March 12, 2025

Completed
11 months until next milestone

Study Start

First participant enrolled

February 1, 2026

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2027

Last Updated

January 23, 2026

Status Verified

January 1, 2026

Enrollment Period

1.2 years

First QC Date

March 6, 2025

Last Update Submit

January 21, 2026

Conditions

Dental Implant

Outcome Measures

Primary Outcomes (2)

  • Replaced Tooth Comparison

    Difference in buccolingual and mesiodistal angulations of placed implant compared with pre-extraction natural tooth.

    Baseline (prior to tooth extraction), day 1 of implant placement, day 1 of crown placement (4-6 months after implant placement)

  • Contralateral Tooth Comparison

    Difference in buccolingual and mesiodistal angulations of placed implant compared with contralateral natural molar.

    Day 1 of implant placement, day 1 of crown placement (4-6 months after implant placement)

Other Outcomes (2)

  • Frequency of Fenestration/Dehiscence

    Day 1 of crown placement (4-6 months post-implant placement)

  • Distance from Foramen Mentale

    Day 1 of crown placement (4-6 months post-implant placement)

Study Arms (1)

Chart Review

Existing records of patients at the Ohio State University College of Dentistry who had a dental implant of one single molar tooth between January 1, 2016 and January 6, 2025

Other: Measurements

Interventions

MeasurementsOTHER

On existing identified chart records: measurements on CBCT and panographic radiographs.

Chart Review

Eligibility Criteria

Age18 Years - 85 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Existing records of patients at the Ohio State University College of Dentistry who have had a dental implant of one single molar tooth, between January 1, 2016 and January 6, 2025

You may qualify if:

  • Patients with mandibular molar implant placement.
  • Presence of contralateral natural mandibular first, second molars or both.
  • Availability of pre-extraction CBCT scans of the corresponding or contralateral mandibular molar tooth or panoramic radiographs for mesiodistal angulation.
  • Availability of post-implant CBCT scans or panoramic radiographs for mesiodistal angulation

You may not qualify if:

  • Incomplete or low-quality CBCT scans.
  • History of mandibular trauma or pathologies altering tooth or implant alignment.
  • History of reconstructive mandibular surgery in the implant region.
  • History of periapical pathology

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

Weights and Measures

Intervention Hierarchy (Ancestors)

Investigative Techniques

Study Officials

  • Binnaz Leblebicioglu, DDS, MMS, PhD

    Ohio State University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Binnaz Leblebicioglu, DDS, MS, PhD

CONTACT

614-292-0371leblebicioglu.1@osu.edu

Study Design

Study Type
observational
Observational Model
OTHER
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

March 6, 2025

First Posted

March 12, 2025

Study Start

February 1, 2026

Primary Completion (Estimated)

May 1, 2027

Study Completion (Estimated)

May 1, 2027

Last Updated

January 23, 2026

Record last verified: 2026-01

Data Sharing

IPD Sharing
Will not share