Do subjectively and objectively impaired oral health parameters influence geriatric assessment results in hospitalized geriatric patients?

BACKGROUND: Impaired oral health affects oral health-related quality of life (OHrQoL) in orthogeriatric hospitalized patients, and both might be associated with potential risk factors for functional impairment, based on the comprehensive geriatric assessment (CGA) and related blood laboratory values. As data on this field are scarce, we investigated possible associations between oral health, items of the geriatric oral health assessment instrument (GOHAI), CGA assessment tools, and relevant laboratory values. METHODS: Explorative cross-sectional pilot study investigating oral and general health, OHrQoL, and functionality based on objective oral health, GOHAI, CGA, and routinely assessed laboratory parameters of orthogeriatric patients. Correlations (Spearman's rho and Pearson's) and regression analysis were performed for the dependent variables functionality, cognition, Mini-Nutritional Assessment, Falls Efficacy Scale (FES), and the 15-item geriatric depression scale (GDS). RESULTS: Among all participants (N = 40), several GOHAI single items (GOHAI 1,4,5,7,10,11) correlated with certain CGA assessment results (fear of falling, Barthel index, handgrip power). Reduced subjective oral health (GOHAI, xerostomia) and objective oral health (oral hygiene index, root caries index, unstimulated salivation rate) correlated with reduced general health and CGA results (polypharmacy, handgrip power, FES, GDS). Anemia was seen in all participants, but no associations between reduced oral health and laboratory blood values were detected. CONCLUSION: Our results demonstrate the association between impaired subjective and objective oral health, OHrQoL, and physical functional impairment among orthogeriatric patients. Impaired GOHAI item results at the dentist, and the association between GOHAI values and CGA results that implies an association between physical and oral health, should encourage a geriatric check based on CGA, and vice versa. Results encourage interdisciplinary cooperation between geriatricians and dentists, but also indicate the need for further research in this field. TRIAL REGISTRATION: DRKS00013230.