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. 2025 Dec;42(4):444-472.
doi: 10.1111/ger.12821. Epub 2025 May 19.

The Impact of Dietary Intake and Nutritional Status on the Oral Health of Older Adults Living in Care Homes: A Scoping Review

Aziza Sallam  1   2 , Noleen K McCorry  1 , Michelle Harvey  1 , Anja Heilmann  3 , Caroline Lappin  4 , Clare McEvoy  1 , Gary Mitchell  1 , Sinead Watson  1 , Ciaran O'Neill  1 , George Tsakos  3 , Jayne Woodside  1 , Paul Brocklehurst  5 , Kerry B D Campbell  1 , Gerry McKenna  1
Affiliations

The Impact of Dietary Intake and Nutritional Status on the Oral Health of Older Adults Living in Care Homes: A Scoping Review

Aziza Sallam et al. Gerodontology. 2025 Dec.

Abstract

Objectives: To review the literature on the relationship between oral health, dietary intake, and nutritional status in older adults in care homes, identifying research gaps.

Background: Many older adults in care homes retain natural teeth but face oral health issues due to challenges in maintaining hygiene and limited dental care access. While the provided diet aims to prevent frailty, it may contain high levels of sugars and fermentable carbohydrates, which can contribute to oral health issues such as dental caries and periodontal disease.

Methods: A scoping review was conducted following PRISMA-ScR guidelines. MEDLINE, CINAHL, Web of Science, and EMBASE were searched to answer, "What is known about the relationship between dietary intake, nutritional status and oral health in older adults in care homes?."

Results: Forty-nine studies (1989-2024) addressed this relationship, with most studies being cross-sectional (n = 43), including two qualitative and one mixed-method study; six were longitudinal, including one interventional. Findings highlighted the negative impact of oral health problems-xerostomia, dysphagia, and chewing issues-on dietary intake and nutritional status, while interventions like denture provision and professional tooth brushing had positive effects. Longitudinal studies emphasised the harm of sugar intake on oral health, with additional factors like dementia, resident dependency, and staffing issues adversely affecting both oral health and nutrition.

Conclusions: This review highlights the complex relationship between oral health, diet, and nutrition in care homes, emphasising gaps in research on the impact of dietary intake, particularly sugar consumption, on oral health, as well as limitations in study designs.

Keywords: care homes; dietary intake; nutritional status; older adults; oral health.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
PRISMA flow diagram. [Colour figure can be viewed at wileyonlinelibrary.com]
FIGURE 2
FIGURE 2
A diagram showing categorisation of included studies. [Colour figure can be viewed at wileyonlinelibrary.com]
See this image and copyright information in PMC

References

    1. Morin L., Laroche M.‐L., Texier G., and Johnell K., “Prevalence of Potentially Inappropriate Medication Use in Older Adults Living in Nursing Homes: A Systematic Review,” Journal of the American Medical Directors Association 17, no. 9 (2016): 862.e1–e9. - PubMed
    1. Tsakos G., Brocklehurst P. R., Watson S., et al., “Improving the Oral Health of Older People in Care Homes (TOPIC): A Protocol for a Feasibility Study,” Pilot and Feasibility Studies 7, no. 1 (2021): 138. - PMC - PubMed
    1. Henni S. H., Skudutyte‐Rysstad R., Ansteinsson V., Hellesø R., and Hovden E. A. S., “Oral Health and Oral Health‐Related Quality of Life Among Older Adults Receiving Home Health Care Services: A Scoping Review,” Gerodontology 40, no. 2 (2023): 161–171. - PubMed
    1. Yoon M. N. and Steele C. M., “Health Care Professionals' Perspectives on Oral Care for Long‐Term Care Residents: Nursing Staff, Speech–Language Pathologists and Dental Hygienists,” Gerodontology 29, no. 2 (2012): e525‐35. - PubMed
    1. Gerdin E. W., Einarson S., Jonsson M., Aronsson K., and Johansson I., “Impact of Dry Mouth Conditions on Oral Health‐Related Quality of Life in Older People,” Gerodontology 22, no. 4 (2005): 219–226. - PubMed

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