Evidence map›Paper›PMID 40121960›Full record

ArticleThe journal of nutrition, health & aging2025

Effects of dental prostheses and occlusal force on adverse health outcomes in community-dwelling older adults lacking functional dentition: The Longitudinal Study of the Tsurugaya Project.

Daizo Seki, Takamasa Komiyama, Takashi Ohi, Yoshitada Miyoshi, Mana Kogure, Naoki Nakaya, Atsushi Hozawa, Yoshinori Hattori

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in The journal of nutrition, health & aging, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
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

8 authors.

Daizo SekiDivision of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan.
Takamasa KomiyamaDivision of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan; Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, United Kingdom. Electronic address: takamasa.komiyama.c6@tohoku.ac.jp.
Takashi OhiDivision of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan; Japanese Red Cross Ishinomaki Hospital, Ishinomaki, Miyagi, Japan.
Yoshitada MiyoshiDivision of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan.
Mana KogureDepartment of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.
Naoki NakayaDepartment of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.
Atsushi HozawaDepartment of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan; Division of Epidemiology, Department of Health Informatics and Public Health, School of Public Health, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
Yoshinori HattoriDivision of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIn this study, we aimed to examine the longitudinal association between combination of remaining natural teeth (RNT) and functional teeth (FT) or occlusal force (OF), with functional disability and mortality among community-dwelling Japanese adults aged ≥70 years with less than 20 remaining teeth.

methodsThe participants included 916 community-dwelling Japanese adults aged 70 years or older in 2003. Exposures were defined as a combination of RNT and either FT or OF. Outcomes included the incidence of functional disability, determined by the first certification under Japan's long-term care insurance system based on physical and cognitive status, and mortality. The participants were followed up until June 2020. Covariates included age; sex; education; comorbidity; smoking; drinking; physical and cognitive status; and depressive symptoms. Cox proportional hazard models were applied to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for functional disability and death.

resultsWe observed a higher incidence of death among participants with <20 RNT and fewer FT (<28) than those with functional dentition (HR: 1.62; 95% CI: 1.19-2.21). The HR for death increased as the oral health category based on RNT and FT worsened (p for trend = 0.003). We observed a higher incidence of functional disability (HR: 1.25; 95% CI: 1.02-1.53) and death (HR: 1.30; 95% CI: 1.01-1.68) among those participants with <20 RNT and reduced OF (<200 N) than those with ≥20 RNT. The HR for functional disability (p for trend = 0.029) and death (p for trend = 0.042) increased as the category based on RNT and OF worsened.

conclusionThis prospective cohort study demonstrated that a combination of <20 RNT and fewer FT was associated with a higher mortality, whereas a combination of <20 RNT and reduced OF was associated with higher incidence of functional disability and death. Dental prostheses and maintaining OF might play an important role in preserving functionality and promoting survival among older adults with less than 20 remaining teeth.

Indexed as

Bite ForceDental ProsthesisDentitionIndependent LivingTooth LossAgedAged, 80 and overFemaleHumansIncidenceJapanLongitudinal StudiesMaleProportional Hazards ModelsFunctional dentitionFunctional disabilityFunctional teethMortalityOcclusal forceOlder adults

Identifiers

PMID40121960
PMCPMC12172953

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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 Socratic graph.