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Impact of Non Surgical Periodontal Therapy on Cystatin C Levels

Effect of Non-Surgical Periodontal Therapy on Cystatin C Levels in Healthy and Renal Impaired Patients

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07103421
Enrollment
30
Registered
2025-08-05
Start date
2023-05-12
Completion date
2025-07-01
Last updated
2025-08-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Periodontitis, Chronic Kidney Disease

Keywords

Non-Surgical Periodontal Therapy, Cystatin C, periodontis, Renal biomarkers

Brief summary

Study the effect of non-surgical periodontal therapy on cystatin C levels in gingival crevicular fluid and serum in both healthy patients and patients with renal impairment. The number of participants is 30 individuals, divided into three groups receiving conservative periodontal treatment (scaling and root planing):Systemically and periodontally healthy patients, Patients with periodontitis without systemic diseases, and Patients with periodontitis and chronic kidney disease. The study also aims to determine the relationship between the severity of periodontal disease and kidney function by measuring cystatin C levels, which is an important biomarker for both conditions. Additionally, it seeks to assess whether non-surgical periodontal therapy can be included in the treatment protocols for kidney patients to improve their quality of life.

Detailed description

Periodontal diseases, particularly gingivitis and periodontitis, are common inflammatory conditions affecting the tooth-supporting tissues. These diseases induce both local and systemic inflammatory responses, which may impact other organs, including the kidneys. Cystatin C (CSTC) is an inhibitor of cysteine proteases and is considered an important biomarker for kidney function, as its serum levels rise in cases of renal impairment. Periodontal diseases may contribute to elevated serum cystatin C levels due to systemic inflammation caused by bacterial infection and inflammatory mediators circulating in the bloodstream. On the other hand, non-surgical periodontal therapy (e.g., scaling and root planing) may reduce both local and systemic inflammation, potentially improving cystatin C levels and kidney function. This study aims to: Assess and compare cystatin C levels in serum and gingival crevicular fluid (GCF) among healthy individuals and patients with periodontitis، Examine the effect of non-surgical periodontal therapy on serum and GCF cystatin C levels in patients with renal impairment compared to healthy controls، and Analyze the relationship between periodontitis severity and kidney function by correlating cystatin C levels with other renal markers (e.g., glomerular filtration rate).

Interventions

DIAGNOSTIC_TESTNon-Surgical Periodontal Therapy

Non-surgical periodontal therapy involves the removal of bacterial plaque and calculus from tooth surfaces and root surfaces beneath the gum line using manual or ultrasonic instruments. This treatment is performed for patients with periodontitis to improve gum health and reduce inflammation. Serum cystatin C levels will be compared before and after treatment between healthy patients and those with renal impairment.

Sponsors

Tishreen University
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Intervention model description

Three parallel groups: healthy controls, periodontis patients without systemic disease, and periodontis patients with chronic kidney disease.

Eligibility

Sex/Gender
ALL
Age
20 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

* Patients with Stage II (Grade A or B) periodontitis (according to AAP 2017 classification). * Age range: 20 to 70 years. * No pathological tooth mobility. * No furcation involvement caused by periodontal disease. * No systemic diseases affecting periodontal or renal health. * No systemic antibiotic use within the previous 3 months. * No periodontal treatment within the previous 6 months For Chronic Kidney Disease (CKD) Patients: * Confirmed CKD diagnosis for at least 3 years (by a consultant nephrologist). * Receiving conservative management (pre-dialysis).

Exclusion criteria

\- Stage III or IV periodontitis. * Grade C periodontal disease. * Bone loss in more than 10 sites. * Pathological tooth mobility (Grade II or III). * Furcation involvement due to periodontal disease. * Tooth loss due to periodontal disease. * Heavy smoking (\>10 cigarettes/day). * Pregnancy or lactation. * Patients undergoing dialysis.

Design outcomes

Primary

MeasureTime frameDescription
Change in Cystatin C levels after periodontal therapyBaseline (before treatment) and 4 weeks after completion of periodontal therapyComparison of serum Cystatin C concentration (mg/L) between baseline and 4 weeks post non-surgical periodontal treatment (scaling and root planing) in periodontitis patients with and without chronic kidney disease.

Other

MeasureTime frameDescription
Improvement in periodontal clinical parameters after Non-Surgical therapy.Baseline measurement (pre-treatment) and 4 weeks post-treatment completionMeasurement of changes in clinical periodontal parameters (clinical attachment level CAL) at 4 sites per tooth, 4 weeks after non-surgical periodontal therapy (scaling and root planing) in systemically healthy periodontitis patients.
Change in oral health-related quality of life indicatorsBaseline measurement (pre-treatment) and 4 weeks follow-upMeasurement of changes in OHI-s (Oral Hygiene Index simplified) to assess oral health-related quality of life before and after periodontal therapy across all study groups.
Effect of Periodontal Therapy on Renal MarkersBaseline measurement (pre-treatment) and 4 weeks post-treatment completionEvaluation of changes in serum cystatin C levels in chronic kidney disease patients (stages 1-3) 4 weeks after non-surgical periodontal therapy.

Countries

Syria

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026