Effects of an 8-week personalized dietary intervention on periodontal disease severity

An intervention study to improve the nutritional and microbiome environment for the management of periodontal disease

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

CRIS

Registry ID

KCT0012313

Enrollment

Registered

2026-07-22

Start date

2026-07-21

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

None listed

Interventions

Behavioral : Participants in the intervention group will receive a personalized nutrition counseling program consisting of four sessions over 8 weeks. Nutrition counseling will be personalized using c

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Completed participation in the parent cohort study. 2) Diagnosed with Stage III or higher periodontitis according to the Tonetti classification in the parent cohort study. 3) Community-dwelling adults aged 40–64 years. 4) Having at least 20 natural teeth (fewer than 8 dental implants). 5) Able to use a smartphone.

Exclusion criteria

Exclusion criteria: 1) Pregnant women. 2) Users of complete or partial dentures. 3) Use of antibiotics within the previous 6 months. 4) Diagnosed with diabetes mellitus. 5) Current smokers. 6) Planned dental treatment during the study period. 7) History of cancer, cardiovascular disease, or autoimmune disease.

Design outcomes

Primary

Measure	Time frame
Bleeding on probing (BOP);Clinical Attachment Loss (CAL);Probing depth (PD)	—

Secondary

Measure	Time frame
Oral and gut microbiome ;Metabolic biomarkers;Anthropometric measurements and body composition	—

Countries

Korea, Republic of

Contacts

Public ContactSeunghee Kim

Seoul National University

tmdhi114@snu.ac.kr+82-2-880-8753

Outcome results