Association of Periodontal Inflammation on Immune Response in Wound Healing

December 2, 2025 updated by: University of Nebraska
Subjects who are in need of extraction of a posterior tooth will be recruited for this study. Prior to extraction, periodontal clinical markers of inflammation, body-mass index and dental radiographs will be measured/taken. The posterior tooth will be atraumatically extracted and a small soft tissue biopsy of the extraction site will be taken. At the two week follow-up, sutures will be removed and another small biopsy of soft tissue will be taken. Subjects will be seen again at 3 months for a final collection of clinical data and radiographs.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Twenty-five healthy adult subjects (aged 21-70) requiring extraction of a posterior tooth will be recruited for this study. Prior to extraction, a limited-view cone beam computed tomography radiograph will be taken as well as clinical measures of periodontal inflammation (probing depths, recession, bleeding on probing, gingival crevicular fluid sampling). The extraction will be completed atraumatically and with local anesthesia. Following extraction, a small biopsy of the soft tissue of the extraction site will be taken and the site then sutured. At the two-week postoperative visit, sutures will be removed and another soft tissue biopsy of the healing site will be collected (along with clinical data from the adjacent teeth). The soft tissue biopsies will be fixed and processed for inflammatory endocytes present during wound healing. At the three-month postoperative visit, all clinical parameters of wound healing will be evaluated; including inflammatory measures (probing depths, recession, bleeding on probing, gingival crevicular fluid sampling) from the adjacent teeth; as well as a limited-view cone beam computed tomography radiograph.

The biopsies will be processed to obtain single cell counts with half of the preparation stained and analyzed via multiparameter flow cytometry. The other half of single cells obtained from the tissue biopsies will be cryopreserved for cellular indexing of transcriptomes and epitopes-sequencing.

Study Type

Observational

Enrollment (Estimated)

25

Contacts and Locations

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

Study Contact

Study Locations

  • United States
    • Nebraska
      • Lincoln, Nebraska, United States, 68583
        • Recruiting
        • University of Nebraska, College of Dentistry
        • Principal Investigator:
          • Amy C Killeen, DDS, MS
        • Contact:

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

21 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Healthy adults ages 21-70 with non-restorable posterior tooth requiring extraction.

Description

Inclusion Criteria:

  • non-restorable posterior tooth (molar/premolar) in need of extraction

Exclusion Criteria:

  • systemic disease that effects inflammation

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Inflammatory cells
Time Frame: 3 months
Number of inflammatory cells present
3 months

Collaborators and Investigators

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

Sponsor

University of Nebraska

Investigators

  • Study Chair: Joseph B Bavitz, DMD, University of Nebraska, College of Dentistry

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)

September 1, 2021

Primary Completion (Estimated)

June 1, 2026

Study Completion (Estimated)

July 1, 2026

Study Registration Dates

First Submitted

March 16, 2021

First Submitted That Met QC Criteria

March 16, 2021

First Posted (Actual)

March 18, 2021

Study Record Updates

Last Update Posted (Actual)

December 10, 2025

Last Update Submitted That Met QC Criteria

December 2, 2025

Last Verified

December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 0257-21-FB

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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