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The influence of Type 2 diabetes mellitus on the subgingival microflora in periodontitis: A cross-sectional study

The influence of Type 2 diabetes mellitus on the subgingival microflora in periodontitis: A cross-sectional study

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2500109048
Enrollment
Unknown
Registered
2025-09-10
Start date
2025-09-15
Completion date
Unknown
Last updated
2025-09-15

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

Conditions

Stage IV/IV Periodontitis: clinical attachment loss = 5 mm

Interventions

Control group (Chronic periodontitis patients without any systemic diseases):None
Experimental group (Chronic periodontitis patients with type 2 diabetes mellitus.):None

Sponsors

Peking University Hospital of Stomatology
Lead Sponsor

Eligibility

Sex/Gender
All
Age
20 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Patients must be diagnosed with chronic periodontitis according to the 2017 consensus of the American Academy of Periodontology (AAP) and the European Federation of Periodontology (EFP). 2. The periodontitis stage of the included patients was stage III/IV, extensive type, and graded as A/B; 3. Subjects with type 2 diabetes must have been diagnosed by a doctor for at least 3 years, be well controlled by medication, and have glycated hemoglobin < 8%; 4. Age over 20 years. 5. Patients signed informed consent.

Exclusion criteria

Exclusion criteria: 1. Pregnant and breastfeeding women; 2. Use local or systemic antibiotics or anti-inflammatory medications within the past three months; 3. Undergo subgingival scaling and root planing within the past six months; 4. Have acute complications of type 2 diabetes or chronic complications such as diabetic retinopathy, diabetic nephropathy, and cardiovascular diseases; 5. Have any oral lesions or oral cancer, a history of chemotherapy within the past five years, or a history of radiation therapy in the head and neck region; 6. Have a history of other chronic systemic diseases such as cardiovascular diseases, respiratory diseases, autoimmune disorders, kidney diseases, etc; 7. Have a history of smoking; 8. Have physical disabilities or mental disorders that affect oral hygiene care; 9. There are situations that affect the completion of research or interfere with the analysis results, such as non-cooperation or concealing medical history.

Design outcomes

Primary

MeasureTime frame
Glycated hemoglobin (HbA1c);Probing Depth;Relative abundance of subgingival microbiota.;Relative abundance of non-culturable bacteria.;

Secondary

MeasureTime frame
Fasting plasma glucose;Plaque Index;Bleeding Index;Bleeding on Probing;

Countries

China

Contacts

Public ContactShaoxia Pan

Peking University Hospital of Stomatology

panshaoxia@vip.163.com+86 10 8219 5393

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026