Skip to content

The contribution of inflamed gums to rheumatoid arthritis

The contribution of periodontitis to the inflammatory burden in rheumatoid arthritis

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN17950307
Enrollment
20
Registered
2019-11-14
Start date
2018-09-01
Completion date
Unknown
Last updated
2026-06-29

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

Conditions

Periodontitis Rheumatoid Arthritis Musculoskeletal Diseases 1. Periodontitis 2. Rheumatoid Arthritis

Interventions

PHASE 1. A cross-sectional study of the prevalence of CP and its correlates in patients with RA Tasks: 1. Assessment of prevalence of CP and its severity degrees in a population of RA patients 2. Es

Sponsors

Coimbra Rheumatology Association (ARCo)
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. 18-70 years old 2. RA diagnosis according to ACR/EULAR 2010 criteria 3. Capable of understanding the study protocol and willing to provide informed consent for clinical evaluation. 4. DAS28 PCR = 3,1 (with no change in medication, dose, or formulation in RA treatment during the 3 months preceding Phase 1 periodontal evaluation and 32 weeks after) 5. Presence of at least six natural teeth 6. Moderate to Severe CP diagnosis (Clinical Attachment Level > 3mm) 7. Available for all study visits over 32 weeks

Exclusion criteria

Exclusion criteria: 1. Pregnant or breastfeeding 2. Smoking habits (past or current) 4. Chronic respiratory disease that could lead to a present state of respiratory insufficiency 5. Presence of other conditions associated with increased CRP, namely: 5.1. Other inflammatory rheumatic diseases other than RA. 5.2. Other active inflammatory diseases (IBD, chronic infections, etc.) 5.3. Current/actual neoplastic diagnosis/treatment 6. History of infection/ antibiotic therapy within the preceding 4 weeks 7. History of periodontal therapy 6 months prior to the examination; 8. Planned hospitalization for pre-existing condition apart from RA within 32 weeks after Phase 1 periodontal evaluation 9. Hypersensitivity to chlorhexidine digluconate. 10. Contraindications to dental local anesthetic. 11. Current and past (last 6 months) participation in another intervention study

Design outcomes

Primary

MeasureTime frame
CRP levels measured using blood sample analysis at baseline, 8weeks, 24 weeks

Secondary

MeasureTime frame
1. Periodontal and joint clinical parameters measured using medical evaluation at baseline, 8weeks, 24 weeks 2. Subgingival bacterial plaque: quantification of several known pathogens RT-PCR (P. gingivalis, T. forsythensis, T. denticola, P. intermedia, A.a. and F. Nucleatum) measured using laboratorial analysis (RT-PCR) of collected subgingival bacterial plaque at baseline, 8weeks, 24 weeks 3. Antibodies anti-citrullinated proteins measured using blood sample analysis at baseline, 8weeks, 24 weeks 4. Serum Cytokines (pro and anti-inflammatory) measured using blood sample analysis at baseline, 8weeks, 24 weeks

Countries

Portugal

Contacts

Public ContactDaniela Silva
uc43889@uc.pt+351 918084531

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jul 3, 2026