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  • Daily Denture Cleaning...

Daily Denture Cleaning Lowers Mortality Risk in Older Adults, unravels study

Written By : Dr Riya Dave |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2025-08-04T20:45:23+05:30  |  Updated On 4 Aug 2025 8:45 PM IST
Daily Denture Cleaning Lowers Mortality Risk in Older Adults, unravels study
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Researchers have discovered in a new study that older adults who brushed their dentures every day have a reduced risk of death in comparison to individuals who did not brush. The research, which was part of the Japan Gerontological Evaluation Study (JAGES), analyzed more than 45,000 older adults living in the community who were 65 years and older, identifying a simple but important health practice of cleaning dentures. The work stresses the relevance of denture cleansing not only for dental health but also for survival in aged persons. The study was published in The Journal of Prosthetic Dentistry by Taro K. and colleagues.

This cohort study with a large sample included 45,301 participants (mean age: 75.8 years, SD: 6.4; 46.4% male) who wore removable dentures.These respondents self-reported in questionnaires how often they cleaned dentures, as either daily or nondaily. The main objective was to determine if such frequency of denture cleaning was associated with all-cause mortality during the study period. Cox proportional hazards regression models were used to examine the data, controlling for possible confounders like demographics, overall health status, and socioeconomic status.

Key Findings

  • 4.5% of the participants indicated that they did not clean their dentures every day.

  • The all-cause mortality rate for all participants was 2.42 per 100 person-years.

  • Adjusted for the possible confounders, the non-daily cleaners had a significantly increased risk of mortality when compared to daily cleaners.

  • Particularly, the all-cause mortality hazard ratio (HR) for the nondaily cleaning group was 1.18 (95% Confidence Interval: 1.06 to 1.30), suggesting an 18% increase in risk of death.

This research is in accordance with the growing recognition that oral health holds a focal position in systemic wellness. Dentures, if not properly cleaned, can be home to lethal bacteria and fungi and cause higher infection risks such as aspiration pneumonia, a proven source of morbidity and mortality in elderly populations.

The research proved that nondaily denture cleansing was related to an 18% higher risk of all-cause mortality in aged people who reside in the community. Denture cleanliness education should be prioritized by health care professionals, families, and also community health personnel in order to improve oral and systemic health in the elderly.

Reference:

Kusama, T., Aida, J., Osaka, K., & Takeuchi, K. (2025). Association between infrequent denture cleaning and all-cause mortality risk among community-dwelling older adults: Findings from a six-year cohort study. The Journal of Prosthetic Dentistry. https://doi.org/10.1016/j.prosdent.2025.07.005


the journal of prosthetic dentistryDenture hygieneelderly healthmortality riskoral hygieneaspiration pneumoniaremovable denturesJapan Gerontological Evaluation Study
Source : The Journal of Prosthetic Dentistry
Dr Riya Dave
Dr Riya Dave

    Dr Riya Dave has completed dentistry from Gujarat University in 2022. She is a dentist and accomplished medical and scientific writer known for her commitment to bridging the gap between clinical expertise and accessible healthcare information. She has been actively involved in writing blogs related to health and wellness.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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