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Prevalence and severity of periodontitis in patients with rheumatoid arthritis (RA) and the effects of treatment

The severity of periodontitis and the effects of periodontal treatment on disease activity of patients with rheumatoid arthritis as well as the influence of medication on periodontitis

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN16761141
Enrollment
150
Registered
2017-08-22
Start date
2017-09-06
Completion date
Unknown
Last updated
2026-06-15

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

Conditions

Periodontitis and Rheumatoid Arthritis Oral Health Periodontitis and Rheumatoid Arthritis

Interventions

After a full-mouth dental and periodontal examination, participants with periodontitis are randomized to one of two groups. Those in the first group receive conventional periodontal treatment only at

Sponsors

Karolinska Institutet
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. =18 years of age 2. Fulfilling the 2010 ACR criteria for RA 3. Moderate to severe periodontitis, defined according to the classification criteria of the CDC Working Group meant for usage in Population-Based Surveillance of Periodontitis 4. Written informed consent to participate 5. Swedish national registration number

Exclusion criteria

Exclusion criteria: 1. Antibiotic treatment =3 months prior to inclusion into the study 2. Periodontal treatment (surgical or non-surgical) =3 months prior to inclusion into the study 3. Pregnancy 4. Simultaneous participation in other interventional studies

Design outcomes

Primary

MeasureTime frame
1. Rheumatoid arthritis (RA) disease activity is measured using the DAS28 score, HAQ score at baseline and one year 2. Periodontal parameters (such as probing pocket depth, clinical attachment loss) are measured using the methods of measurement of periodontal disease/parameters at baseline and months three, six, nine, and twelve

Secondary

MeasureTime frame
Current secondary outcome measures as of 23/09/2025: 1. The microbial profile is assessed using sequencing technology throughout the study (the specific time points depend on the availability of the resources as well as the instruments at core facility) 2. Antibody levels (such as ACPA/RF, periodontal pathogens etc) are measured using multiplex immunoassay, nephelometry and/or ELISA technique at baseline and one year 3. Levels of inflammatory mediators are measured using Luminex immunoassay at baseline and one year 4. Metabolome profile measured using liquid chromatography–mass spectrometry (LC/MS) at baseline and one year Previous secondary outcome measures: 1. The microbial profile is assessed using sequencing technology throughout the study (the specific time points depend on the availability of the resources as well as the instruments at core facility) 2. Antibody levels (such as ACPA/RF, periodontal pathogens etc) are measured using multiplex immunoassay, nephelometry and/or ELISA technique at baseline and one year 3. Levels of inflammatory mediators are measured using Luminex immunoassay at baseline and one year

Countries

Sweden

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 21, 2026