Periodontal status, smoking, and salivary inflammasome markers
Official title: The Impact of Periodontal Status and Smoking on Salivary Inflammasome Levels: A Cross-Sectional Study
Run by Uskudar University · NCT07312552 · Data updated 2026-11-12
This trial will test whether levels of salivary inflammasome proteins (NLRP-3, NLRP-6, NLRP-12, NLRC-5, IL-1β and IL-10) differ between people with and without periodontitis and whether smoking changes those levels.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 116 (estimated) |
| Sponsor | Uskudar University Academic / other |
| Locations | 1 site (Istanbul) |
| Status | Recruiting |
| Started | December 23, 2025 |
| Main results expected | June 2026 |
| Study ends | July 2026 |
| Registry record updated | January 21, 2026 |
| Trial ID | NCT07312552 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are systemically healthy adults with at least 20 teeth who are clinically periodontally healthy or have periodontitis and who are either current smokers or non-smokers without recent antibiotics or periodontal treatment.
✕Probably not a fit
People with diabetes, rheumatoid arthritis, recent antibiotic or periodontal therapy, current medications that affect gingival health, pregnancy or lactation, heavy alcohol use, or fewer than 20 teeth are unlikely to qualify or benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study compares salivary inflammasome and cytokine levels across four groups: smokers with periodontitis, non-smokers with periodontitis, smokers without periodontitis, and non-smokers without periodontitis. Participants receive medical and dental history review, full intraoral and periodontal examinations according to the 2017 AAP/EFP classification, and unstimulated saliva collection prior to clinical measurements. Saliva samples are stored at −80°C and later analyzed by ELISA to quantify NLRP-3, NLRP-6, NLRP-12, NLRC-5, IL-1β and IL-10. The study aims to determine whether these salivary markers can serve as noninvasive diagnostic indicators of periodontitis and whether smoking modulates their associations with periodontal status.
Why it matters
Potential benefit: If successful, the findings could support simple saliva-based tests to help identify periodontitis and clarify how smoking affects oral inflammatory markers.
How similar studies have gone: Previous work has shown that salivary cytokines such as IL-1β can distinguish periodontal disease with modest accuracy, but measuring NLRP family inflammasome proteins in saliva is less established and remains exploratory.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * systemically healthy, * clinical diagnosis of periodontitis, * clinical diagnosis of periodontal health Exclusion Criteria: * history of regular use of systemic antibiotics, anti-inflammatory, or antioxidant drugs (previous 6 months); * nonsurgical periodontal treatment (previous 6 months); * surgical periodontal treatment (previous 12 months); * presence of \<20 teeth; * current medications affecting gingival health (calcium channel blockers, phenytoin, cyclosporine, and hormone replacement therapy); * diabetes diagnosis; rheumatoid arthritis diagnosis; and pregnancy, lactating, or excessive alcohol consumption.
Where it's running
-
Uskudar University, Faculty of Dentistry
Istanbul, Turkey (Türkiye) Recruiting
Study contacts
- Principal investigator: Kubra KARADURAN — Uskudar University
- Study coordinator: Kubra KARADURAN
- Email: kubra95krdrn@gmail.com
- Phone: +905395913683
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Smoking, MFN1, and NLRP3 Levels in Gum Fluid Across Periodontal Health and Disease
This study tests whether smoking changes MFN1 and NLRP3 protein levels in the fluid around the gums for adults with or without periodontitis.
-
Dental Loupes vs. Dental Operating Microscope for Non-Surgical Periodontal Treatment
This study tests whether using dental loupes or a dental operating microscope makes non-surgical periodontal cleaning more effective for adults with periodontitis.
-
Adjuncts to non-surgical periodontal treatment in smokers and non-smokers with periodontitis
This trial tests whether adding I-PRF, povidone-iodine, or diode laser to standard deep cleaning helps reduce pocket depth and improve gum health in adults with periodontitis, including smokers.
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Salivary biomarkers and periodontal disease progression
This study tests whether certain salivary biomarkers can reflect progression from healthy gums to gingivitis and periodontitis in adults.
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Periodontal Health in Rare Kidney Conditions and Controls
This study tests how common periodontitis is in people with rare kidney disorders and compares it to CKD patients and people without kidney disease.
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Candida albicans and periodontitis in Syrian patients
This project will test whether Candida albicans is commonly present in the gum pockets of Syrian adults with chronic periodontitis.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.