Apical Periodontitis and Glycemic Control in Diabetic and Non-diabetic Egyptian Sub-population

September 30, 2026 updated by: Yara Yousif Abdalla Kairi, Cairo University

Prevalence of Apical Periodontitis and it's Association With Glycemic Control in Diabetic and Non-diabetic Egyptian Sub-population: A Cross-sectional Study

This observational cross-sectional study aims to assess the prevalence of apical periodontitis in diabetic and non-diabetic adult Egyptian patients and to evaluate its association with glycemic control measured by glycated hemoglobin (HbA1c). Participants will undergo clinical examination, digital panoramic radiographic assessment, and HbA1c measurement.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Apical periodontitis is an inflammatory disease of the periapical tissues that develops as a consequence of endodontic infection. Diabetes mellitus has been associated with an increased prevalence of apical periodontitis, although the available evidence remains limited and inconsistent. In addition, the relationship between glycemic control and apical periodontitis remains unclear, and population-specific data in Egypt are limited.

This observational cross-sectional study will assess the prevalence of apical periodontitis in diabetic and non-diabetic adult Egyptian patients and evaluate the association between glycemic control and apical periodontitis. Participants will be recruited from outpatient dental clinics of the Endocrine and Diabetes Center in Cairo, Egypt, in collaboration with the Department of Endodontics, Faculty of Dentistry, Cairo university.

Eligible participants will be Egyptian males and females aged 21 years or older with at least eight teeth present. Participants will undergo standardized clinical oral examination, digital panoramic radiographic examination, and measurement of glycated hemoglobin (HbA1c). Apical periodontitis will be assessed radiographically based on the presence or absence of periapical radiolucency. Participants will be classified into diabetic and non-diabetic groups according to HbA1c levels.

The primary objective is to assess the prevalence of apical periodontitis in diabetic and non-diabetic patients. The secondary objective is to evaluate the association between HbA1c levels and the presence of apical periodontitis. The planned sample size is 88 participants, with 44 participants in each group.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
88

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 Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

21 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Adult Egyptian male and female patients aged 21 years or older with at least 8 teeth, recruited from outpatient dental clinics at the Faculty of Dentistry, Cairo University and the Endocrine and Diabetes Center, Cairo, Egypt. Participants will be classified into diabetic and non-diabetic groups based on their measured HbA1c levels.

Description

Inclusion Criteria:

  • Adult Egyptian males and females
  • 21 years or older
  • At least 8 teeth present
  • Willing to undergo clinical and radiographic examination, HbA1c measurement, -Willing to provide informed consent.

Exclusion Criteria:

  • Participants younger than 21 years
  • fewer than 8 teeth
  • Those who refuse clinical or radiographic examination
  • Patients with systemic diseases other than diabetes that may affect oral or periapical health.

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: OTHER
  • Time Perspectives: CROSS_SECTIONAL

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Group 1: diabetic participants

Participants with HbA1c ≥6.5%
Group 2: non-diabetic participants

Participants with HbA1c <6.5%.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Prevalence of apical periodontitis
Time Frame: During the 6-month study/recruitment period.

Presence or absence of apical periodontitis assessed by digital panoramic radiographic examination using binary scoring based on the presence of periapical radiolucency.
During the 6-month study/recruitment period.

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Cairo 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 (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 5, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 5, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 5, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 24, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 30, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 2, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 2, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 30, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 24.9.2024

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual participant data will not be shared with individual researchers outside the study team. Study data will be accessible to the Principal Investigator and supervisors and will be protected to maintain participant confidentiality.

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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