Introduction: Although many studies associate a poor state of oral health with the risk of undernutrition in both the autonomous and dependent elderly, very few of them consider the frail elderly person. However, the identification of the frail elderly is one of major issues of modern geriatrics. It is at this stage that preventive strategies are the most effective against the risks of dependency. The main objective of our study is to explore the nature of the association between oral health and undernutrition in the frail elderly patient, and to identify the associated factors.
Materials and methods: We have used the data of an observational transversal monocentric study, conducted among a population of patients hospitalized for frailty assessment at the Geriatric Frailty Clinic (G.F.C.) for Assessment of Frailty and Prevention of Disability. The enrolment site is the Cité de la Santé, at Toulouse University Hospital. Data were collected from January 25, 2016 February 2, 2018. The data collected sociodemographic characteristics, oral health (Oral Health Assessment Tool), nutritional status (Mini Nutritional Assessment), Body Mass Index, and weight loss according to Fried), frailty (Fried criteria), functional status (Mini Mental State Examination, Activity of Daily Living, Instrumental Activity of Daily Living, Geriatric Depression Scale-15), and behavior (tobacco and alcohol).
Results: We included 1,155 subjects with an average age of 81.9 years, including 65% women. Bivariate analysis indicated a statistically significant association (p<0.05) between a pathological state of oral health and undernutrition, particularly with regard to decay of natural teeth, pathologies of the tongue, gums and tissues, dry mouth, lack of oral cleanliness and presence of dental pain. Multivariate analysis adjusted for socio-demographic, behavioral and functional data confirmed some of these associations, notably between the item gum/mucous membrane and the decrease of the score (p<0.01); this same item and weight loss according to Fried (p<0.01), and the item tongue and weight loss (p<0.05). A statistically significant association appeared between the state of oral health and frailty (item tongue (p<0.01)).
Discussion: Our study shows a statistically significant association between a pathological state of oral health and nutrition disorders in the frail elderly person. This result confirms the hypothesis postulating that a poor state of oral health would be associated with nutritional disorders among the frail elderly. Our analysis also shows a statistically significant association between a deteriorated state of oral health and frailty. Tongue diseases here increase the risk of frailty for the patient. Our results are, however, limited and do not allow for an analysis of causal effect. It would be useful to complete our study by more refined analyses of risk factors, conducted on a larger sample, and with a follow-up patients over time.
Conclusion: We show here the importance of targeting the frail population in order to screen for oral disease and refer patients for dental care. Ensuring oral health care of frail patients seems indispensable if they are to maintain not only a healthy nutritional state, but also a satisfactory general state of health, thus allowing for successful aging.
Keywords: Oral health; elderly person; frailty; nutrition.