Observational studyGeriatrics & gerontology international2020
Number of functional teeth more strongly predicts all-cause mortality than number of present teeth in Japanese older adults.
Observational study in Geriatrics & gerontology international, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
23 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Deteriorated oral health and function as risk factors for physical disability and mortality in community-dwelling older adults: a systematic review and meta-analysis.European geriatric medicine · 2026Pooled it
- The impact of the number of remaining teeth on the risk of frailty: a meta-analysis.Odontology · 2026Pooled it
- Association Between Toothbrushing Habits and Mucosal Healing in Japanese Patients with Ulcerative Colitis.Digestive diseases and sciences · 2026Article
- Association Between Masticatory Performance and Nutritional Risk in Older Adults Wearing Removable Dentures: A Cross-Sectional Study Using Composite Nutritional Indices.Journal of clinical medicine · 2026Article
- Restoration of Functional Oral Intake After Proximal Gastrectomy Using an Individualized Risk-Adapted Multidisciplinary Approach: A Case Report.Clinical case reports · 2026Article
- Functional Dentition Life Expectancy (FDLE): a novel indicator for monitoring oral health in ageing populations.Clinical oral investigations · 2026Article
- Tooth Count and Prognosis in Older Patients With Heart Failure.Circulation reports · 2026Article
- Chewing function, diet quality, and risk of metabolic syndrome and mortality: analysis of NHANES 1999-2018.BMC oral health · 2026Article
- 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.The journal of nutrition, health & aging · 2025Article
- Association between number of functional teeth and physical function among community-dwelling older adults: Korean Frailty and Aging Cohort Study.BMC geriatrics · 2024Article
- Tooth loss, denture use, and all-cause and cause-specific mortality in older adults: a community cohort study.Frontiers in public health · 2023Article
- Impact of number of functional teeth on independence of Japanese older adults.Geriatrics & gerontology international · 2022Article
- Relationship between maintenance of occlusal support achieved by home-visit dental treatment and prognosis in home-care patients-a preliminary study.Geriatrics & gerontology international · 2022Article
- Comparison of the Amount of Used and the Ease of Oral Care between Liquid and Gel-Type Oral Moisturizers Used with an Oral Care Simulators.International journal of environmental research and public health · 2022Article
- Interrelationships among whole-body skeletal muscle mass, masseter muscle mass, oral function, and dentition status in older Japanese adults.BMC geriatrics · 2021Article
- Decreased Tongue Pressure Associated with Aging, Chewing and Swallowing Difficulties of Community-Dwelling Older Adults in Taiwan.Journal of personalized medicine · 2021Article
- Update and review of the gerodontology prospective for 2020's: Linking the interactions of oral (hypo)-functions to health vs. systemic diseases.Journal of dental sciences · 2021Review
- Association between presence of 20 or more natural teeth and all-cause, cancer-related, and cardiovascular disease-related mortality: Yamagata (Takahata) prospective observational study.BMC oral health · 2020Observational
- Relationship between Maximum Tongue Pressure Value and Age, Occlusal Status, or Body Mass Index among the Community-Dwelling Elderly.Medicina (Kaunas, Lithuania) · 2020Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
33 authors.
Funding
Abstract
aimPrevious studies on the association between intraoral conditions and mortality in community-dwelling older individuals reported that fewer present teeth (PT) are significant risk factors for mortality. However, how the number of PT relative to the number of functional teeth (FT), including both present and rehabilitated teeth, influences mortality has not been investigated fully. This study examined the impact of the number of FT on mortality among community-dwelling Japanese older adults.
methodsThis study was a retrospective, observational and population-based follow-up study, which examined 1188 older individuals who participated in an annual geriatric health examination from 2009 to 2015. The average follow-up period was 1697.0 ± 774.5 days. The primary outcome was all-cause mortality at follow-up. The numbers of PT and FT of each participant were counted during an oral examination. In addition, demographics, clinical variables, blood nutrient markers, physical functions and perceived masticatory function were measured.
resultsKaplan-Meier analysis, followed by a log-rank test, revealed that fewer PT (P < 0.001) and FT (P = 0.002) were significantly associated with a reduced survival rate. Cox's proportional hazard analysis indicated that the number of FT, but not the number of PT, was a significant independent mortality risk factor after adjusting for demographics, clinical variables, nutrient markers and physical functioning (P = 0.036, hazard ratio: 2.089).
conclusionsCurrent results suggest that the number of FT more strongly predicts all-cause mortality than the number of PT among community-dwelling older adults. Further studies are necessary to consider the confounding of socioeconomic status and disability status. Geriatr Gerontol Int 2020; ••: ••-••.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.