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miRNAs in Periodontal Disease

Effects of Smoking on Saliva MicroRNAs Before and After Non-Surgical Periodontal Therapy in Patients With Periodontal Disease

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05046678
Enrollment
90
Registered
2021-09-16
Start date
2019-03-01
Completion date
2020-11-01
Last updated
2021-09-16

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

Conditions

Gingivitis, Periodontal Diseases, Periodontitis

Brief summary

It has been stated that microRNA (miRNA) play an important role in development, homeostasis and immune functions, and abnormal miRNA expression may cause faster disease progression. The aim of this study was to determine miR-203, miR-142-3p, miR-146a, miR-146b, miR-155, miR-29b gene expressions in saliva of the patients with periodontal disease before and after non-surgical periodontal therapy (NSPT) and to evaluate the effect of smoking on these miRNAs. A total of 90 individuals, 30 with periodontitis, 30 with gingivitis, and 30 periodontally healthy (control group), were included. These three groups were divided into subgroups as smoking and non-smoking individuals, with 15 people in each group. NSPT was applied to patients with periodontitis and gingivitis. Saliva samples and clinical parameters were taken from at baseline and repeated 6 weeks after NSPT.

Interventions

DIAGNOSTIC_TESTControl

probing pocket depth (PPD)≤ 3 mm (presence of normal gingival sulcus), bleeding on probing (BOP) \< 10%, clinical absence of periodontal inflammation, radiological bone loss, and any prior periodontal disease, additionally presence of anatomically intact periodontium and nonsmokers if they had no previous history of smoking

DIAGNOSTIC_TESTSmokers with periodontally healthy

probing pocket depth (PPD)≤ 3 mm (presence of normal gingival sulcus), bleeding on probing (BOP) \< 10%, clinical absence of periodontal inflammation, radiological bone loss, and any prior periodontal disease, additionally presence of anatomically intact periodontium and smokers if they had smoked ≥10 cigarettes/day for ≥5 years

DIAGNOSTIC_TESTNon-smokers with gingivitis

without attachment and alveolar bone loss who had gingival inflammation, PD ≤ 3 mm and BOP \> 30% in the full mouth and nonsmokers if they had no previous history of smoking

DIAGNOSTIC_TESTSmokers with gingivitis

without attachment and alveolar bone loss who had gingival inflammation, PD ≤ 3 mm and BOP \> 30% in the full mouth and smokers if they had smoked ≥10 cigarettes/day for ≥5 years

DIAGNOSTIC_TESTNon-smokers with periodontitis

interdental clinical attachment level (CAL) ≥ 5 mm and PPD ≥ 6 mm on at least two non-adjacent teeth, bone loss involving the middle or apical third of the root radiographically, moderate ridge defect and ≥30% of teeth and nonsmokers if they had no previous history of smoking

DIAGNOSTIC_TESTSmokers with periodontitis

interdental clinical attachment level (CAL) ≥ 5 mm and PPD ≥ 6 mm on at least two non-adjacent teeth, bone loss involving the middle or apical third of the root radiographically, moderate ridge defect and ≥30% of teeth and smokers if they had smoked ≥10 cigarettes/day for ≥5 years

Sponsors

Bulent Ecevit University
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
25 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

Have at least 20 natural teeth, excluding third molars. Periodontitis patients had at least two non-adjacent sites per quadrant with probing depth (PD) ≥ 5 mm and clinical attachment level (CAL) ≥ 5 mm with gingival inflammation, and alveolar bone loss affecting \>30% of the teeth, as detected on clinical and radiographical examinations. Gingivitis patients had without attachment and alveolar bone loss who had gingival inflammation, PD ≤ 3 mm and BOP \> 30% in the entire mouth Periodontally healthy control group had no sign of gingival inflammation, no PD \> 3mm and no evidence of attachment or bone loss

Exclusion criteria

History of systemic disease. Regular use of any drugs which can effect the immune system or inflammatory response in the 6 months preceding the start of the study. Periodontal treatment during last 6 months that could affect periodontal status. History of radiotherapy or chemotherapy. Current pregnancy, lactation or menopause.

Design outcomes

Primary

MeasureTime frameDescription
miRNAs gene expressions in the periodontal diseasebaselinemiR-203, miR-142-3p, miR-146a, miR-146b, miR-155, miR-29b gene expressions in saliva

Secondary

MeasureTime frameDescription
miRNAs gene expressions in the periodontal diseasebaseline and 6 weeks after treatmentmiR-203, miR-142-3p, miR-146a, miR-146b, miR-155, miR-29b gene expressions in saliva before and after non-surgical periodontal treatment

Other

MeasureTime frameDescription
miRNAs gene expressions in the periodontal diseasebaseline and 6 weeks after treatmentmiR-203, miR-142-3p, miR-146a, miR-146b, miR-155, miR-29b gene expressions in saliva of the individials with smokers and nonsmokers

Countries

Turkey (Türkiye)

Outcome results

None listed

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