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The Bell BriefFrom Dr. Jennifer Bell, DDS
MEDIUMClinicalTier 1

The Dietary Inflammatory Index and Periodontal Inflammation in Community‐Dwelling Older Adults in Japan: The Otassha Study

SourceJournal of Clinical PeriodontologyTier 1Peer-Reviewed Research

By Akihiro Yuguchi, Masanori Iwasaki, Maki Shirobe, Yurie Mikami, Misato Hayakawa, Keiko Motokawa, Yoshiko Motohashi, Yuki Ohara, Ayako Edahiro, Hisashi Kawai, Yoshinori Fujiwara, Kazushige Ihara, Yutaka Watanabe, Hiroyuki Sasai, Shuichi Obuchi, Hirohiko Hirano

Originally at onlinelibrary.wiley.com

Summary & scoring by The Bell Brief (Dr. Jennifer Bell) using the Drill-Down Protocol (Drill-Down Score) — not the original publisher.

Why it matters for dental

Periodontal specialists and restorative practices treating older adults may need to incorporate dietary counseling into non-surgical therapy protocols, as a pro-inflammatory diet was shown to worsen periodontal inflammation in community-dwelling seniors.

Key points

  • Study population: 1,200+ Japanese adults ≥65 years (Otassha cohort) examined for associations between Dietary Inflammatory Index (DII) scores and periodontal parameters.
  • Results: Higher DII scores (more pro-inflammatory diets) correlated with increased bleeding on probing and deeper pockets after adjusting for smoking, brushing frequency, and comorbidities.
  • Clinical implication: Dietary modification—specifically lowering DII—may serve as an adjunct to scaling/root-planing or supportive maintenance in older patients.
  • Timeline: Published August 2026, Journal of Clinical Periodontology; findings may inform future ADA or EFP evidence-based guidelines for perio-systemic care.

Who should care

SpecialistAssociate

Read the original on Journal of Clinical Periodontology

Full reporting and any paywall content live on onlinelibrary.wiley.com. We summarize and score; we do not republish.

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