Observational studyBMC oral health2020
Association between presence of 20 or more natural teeth and all-cause, cancer-related, and cardiovascular disease-related mortality: Yamagata (Takahata) prospective observational study.
Observational study in BMC oral health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 26 citations in OpenAlex.
- Association Between Toothbrushing Habits and Mucosal Healing in Japanese Patients with Ulcerative Colitis.Digestive diseases and sciences · 2026Article
- Fruit and vegetable consumption frequency and tooth-loss transitions across baseline dentition strata in older Chinese adults: a prospective cohort study.Frontiers in nutrition · 2026Article
- Tooth loss, dental prosthesis use, and cause-specific mortality in older Japanese adults: a 7-year cohort study.Scientific reports · 2025Article
- Association between the number of teeth and all-cause mortality rate in the MASHAD Cohort Study.Journal of dental research, dental clinics, dental prospects · 2025Article
- Examining the Impact of Natural Teeth Trajectory on Mortality Among CLHLS.International dental journal · 2025Article
- The impact of living alone on older adults' mental health and the mediating role of healthy diet.Frontiers in psychiatry · 2025Article
- Article
- Relationships among tooth loss, prefrailty, and dietary patterns in community-dwelling older Japanese females: a cross-sectional study.Nutrition research and practice · 2024Article
- Inequality in dental flossing behavior among Korean adults based on household income levels.Epidemiology and health · 2024Article
- The Healthy Eating Index and oral health among adults: a cross-sectional study from an Iranian RaNCD cohort data.Scientific reports · 2023Article
- The use of interdental cleaning devices and periodontal disease contingent on the number of remaining teeth in Korean adults.Scientific reports · 2022Article
- Tooth Loss Related with Prevalence of Metabolic Syndrome in a General Urban Japanese Population: The Suita Study.International journal of environmental research and public health · 2022Article
- The Association of Dietary Intake, Oral Health, and Blood Pressure in Older Adults: A Cross-Sectional Observational Study.Nutrients · 2022Observational
- Observational
- Is the Number of Missing Teeth Associated With Mortality? A Longitudinal Study Using a National Health Screening Cohort.Frontiers in medicine · 2022Article
Corrections and comments
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral studies have surveyed the relationship between the presence of ≥ 20 natural teeth and mortality. However, very few have evaluated this association over a long-term follow-up of more than ten years within a large population in Japan. This study aimed to prospectively confirm the associations between mortality and the presence of ≥ 20 natural teeth within a community-based population in Japan.
methodsA prospective observational study including 2208 participants aged ≥ 40 years was conducted in Takahata Town, Japan, between May 2005 and December 2016. All participants answered a self-administered questionnaire to provide their background characteristics, including their number of teeth. The participants were classified into two categories based on their self-reported number of teeth (< 20 and ≥ 20 teeth). Hazard ratios (HR) and 95% confidence intervals (CI) were calculated using Cox proportional-hazards regression model to assess risk factors for all-cause, cancer-, and cardiovascular disease-related mortality.
resultsThe total follow-up period was 131.4 ± 24.1 months (mean ± SD). After adjusting for covariates, the risk of all-cause mortality was significantly higher in the group with < 20 teeth than in those with ≥ 20 teeth (HR = 1.604, 95% CI 1.007-2.555, p = 0.047). However, the risk of cancer- and cardiovascular disease-related mortalities was not statistically significant between the two groups.
conclusionIn this study, participants with < 20 teeth had a significantly higher risk of all-cause mortality, although the difference was borderline significant. These results emphasize the importance of having ≥ 20 natural teeth for a healthy life expectancy.
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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.