Evidence map›Paper›PMID 42134849›Full record

ArticleJournal of clinical periodontology2026

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

Akihiro Yuguchi, Masanori Iwasaki, Maki Shirobe, Yurie Mikami, Misato Hayakawa, Keiko Motokawa, Yoshiko Motohashi, Yuki Ohara, Ayako Edahiro, Hisashi Kawai and 6 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of clinical periodontology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Akihiro YuguchiDivision of Dental Public Health, Department of Oral Health Science, Graduate School of Dental Medicine, Hokkaido University, Hokkaido, Japan.
Masanori IwasakiDivision of Dental Public Health, Department of Oral Health Science, Graduate School of Dental Medicine, Hokkaido University, Hokkaido, Japan.ORCID https://orcid.org/0000-0002-5739-2936
Maki ShirobeTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.ORCID https://orcid.org/0000-0003-2478-8202
Yurie MikamiTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Misato HayakawaTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Keiko MotokawaTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Yoshiko MotohashiTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Yuki OharaMiyagi Advanced Dental Hygienist College, Miyagi, Japan.
Ayako EdahiroTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.ORCID https://orcid.org/0000-0002-6055-211X
Hisashi KawaiTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Yoshinori FujiwaraTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Kazushige IharaDepartment of Social Medicine, Hirosaki University Graduate School of Medicine, Aomori, Japan.
Yutaka WatanabeTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.ORCID https://orcid.org/0000-0002-4983-2399
Hiroyuki SasaiTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.ORCID https://orcid.org/0000-0001-8120-6163
Shuichi ObuchiTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
Hirohiko HiranoTokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.

Funding

8020 Promotion Foundation 24-2-04FUTOKUKAI Foundation 2024-201Japan Society for the Promotion of Science 22K10331Japan Society for the Promotion of Science 25K02833Lotte Research Promotion 2022A0003Ministry of Health, Labour and Welfare 23FA1022Ministry of Health, Labour and Welfare 24GA2002Mitsui Sumitomo Insurance Welfare FoundationNational Center for Geriatrics and Gerontology 28-30National Center for Geriatrics and Gerontology 29-42
6 · The paper itself

Abstract

aimTo investigate the association between the dietary inflammatory index (DII) and periodontal inflammation (periodontal inflamed surface area [PISA]) in community-dwelling older adults in Japan. MATERIALS AND

methodsDII scores, derived from a validated questionnaire-based dietary assessment, were categorised into quartiles. Linear regression models were used to assess the associations between DII (exposure) and log-transformed PISA (outcome) calculated from full-mouth periodontal examinations. Restricted cubic spline (RCS) models were applied to examine potential nonlinearity.

resultsAmong the 466 participants (mean age = 73.1 years), the median PISA was 37.8 mm

conclusionsDiets with greater inflammatory potential were associated with higher periodontal inflammatory burdens among older adults in Japan. DII may serve as a modifiable dietary indicator to support periodontal health in ageing populations.

Indexed as

DietPeriodontitisAgedAged, 80 and overFemaleHumansIndependent LivingInflammationJapanMalePeriodontal Indexcross‐sectional studiesdietepidemiologyinflammationperiodontal diseases

Identifiers

PMID42134849
PMCPMC13371406

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.