Effect of Thymoquinone 0.2% Gel on Bone Density, Bone Width, and Socket Preservation After Tooth Extraction

August 10, 2026 updated by: Muataz Adnan Karimeh, Kafrelsheikh University

Clinical and Radiographic Evaluation of the Effect of Thymoquinone 0.2% Gel on Bone Density, Bone Width, and Socket Preservation After Tooth Extraction

This study aims to evaluate the clinical and radiographic effects of 0.2% Thymoquinone gel on bone density, bone width, and socket preservation after tooth extraction.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Tooth extraction triggers a cascade of biological events which lead to significant remodeling of the alveolar ridge, frequently resulting in reductions in both bone width and height.

The concept of alveolar ridge preservation (ARP) has developed to address the bone resorption that follows extraction. ARP aims to maintain ridge dimensions and reduce the need for further augmentation before implant placement.

Among these, the small-molecule Thymoquinone (TQ), derived from Nigella sativa, has demonstrated significant osteogenic, anti-inflammatory, and antioxidant effects in preclinical studies.

Study Type

Interventional

Enrollment (Estimated)

30

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 Contact

Study Locations

  • Egypt
    • Kafrelsheikh
      • Kafr ash Shaykh, Kafrelsheikh, Egypt, 33516
        • Recruiting
        • Kafrelsheikh University
        • Contact:
        • Sub-Investigator:
          • Mohammed M Hussein, MD
        • Sub-Investigator:
          • Ola M El Borady, MD

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

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age: 18-50 years.
  • Both sexes.
  • Patients requiring extraction of upper posterior teeth will be recruited.

Exclusion Criteria:

  • Healthy subjects with intact sockets after extraction.
  • Normal mouth opening and good oral hygiene.
  • No systemic conditions affecting bone healing.

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Group I (Negative Control)
Patients will receive gel foam only
Drug: Gel foam
Patients will receive gel foam only.
Experimental: Group II (Study Group 1)
Patients will receive 0.2% thymoquinone gel + gel foam.
Drug: Thymoquinone gel + gel foam
Patients will receive 0.2% thymoquinone gel + gel foam.
Experimental: Group III (Study Group 2, Nano)
Patients will receive nano-formulated 0.2% thymoquinone gel + gel foam.
Drug: Nano-formulated 0.2% thymoquinone gel + gel foam
Patients will receive nano-formulated 0.2% thymoquinone gel + gel foam.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in alveolar bone density after tooth extraction
Time Frame: 3 months after tooth extraction
Alveolar bone density will be assessed radiographically using cone-beam computed tomography (CBCT). The change in bone density from baseline to the specified postoperative assessment will be compared.
3 months after tooth extraction

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in alveolar bone width after tooth extraction
Time Frame: 3 months after tooth extraction
Alveolar bone width will be assessed radiographically using cone-beam computed tomography (CBCT). The change in alveolar ridge width from baseline to the postoperative assessment will be measured.
3 months after tooth extraction
Change in alveolar ridge dimension after tooth extraction
Time Frame: 3 months after tooth extraction
Alveolar ridge dimensions will be assessed radiographically using cone-beam computed tomography (CBCT). Changes in the dimensions of the alveolar ridge following tooth extraction will be measured and compared.
3 months after tooth extraction

Collaborators and Investigators

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

Sponsor

Kafrelsheikh 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)

February 1, 2026

Primary Completion (Estimated)

February 1, 2027

Study Completion (Estimated)

February 1, 2027

Study Registration Dates

First Submitted

August 10, 2026

First Submitted That Met QC Criteria

August 10, 2026

First Posted (Actual)

August 14, 2026

Study Record Updates

Last Update Posted (Actual)

August 14, 2026

Last Update Submitted That Met QC Criteria

August 10, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • KFSIRB200-852

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The data will be available upon a reasonable request from the corresponding author after the end of study for one year.

IPD Sharing Time Frame

After the end of study for one year.

IPD Sharing Access Criteria

The data will be available upon a reasonable request from the corresponding author

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL

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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