A detailed literature review covers the relationship(s) between oral health, nutritional status and quality of life in older adults.
Effective management of oral health problems helps to prevent or reduce malnutrition / undernutrition. It plays an important role in improving quality of life in the elderly population. Regular good practice in oral health hygiene (such as regular teeth brushing / cleaning by an individual or carer) is advocated. Regular oral health risk assessments, identification and treatment of unhealthy oral conditions, and the ability to identify abnormal oral changes versus age-related changes are important aspects of effective oral health care.
Ijaopo, EO. [and] Ijaopo, R. (2018). A review of oral health in older adults: key to improving nutrition and quality of life. OBM Geriatrics. August 27th 2018, Vol.2(3), 010. [Epub ahead of print].
A more recent review also found tooth loss to be associated positively with increased risk of dementia:
Fang, WL. Jiang, MJ. [and] Gu, BB. [et al] (2018). Tooth loss as a risk factor for dementia: systematic review and meta-analysis of 21 observational studies. BMC Psychiatry. October 20th 2018; 18(1): 345.