Oral medicine
Xerostomia and salivary hypofunction in vulnerable elders: prevalence and etiology

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Objective

The goal of this article is to review existing research on the prevalence and etiology of dry mouth in the vulnerable elders and identify knowledge gaps.

Study Design

Vulnerable elders (VE) are persons aged >65 years who have any or all of the following: limited mobility, limited resources, or complex health status. A systematic search was conducted of PubMed sources from 1989 to May 2010. Evidence was evaluated on the prevalence and etiology of xerostomia and salivary gland hypofunction (SGH) in VE.

Results

The search identified 1,422 publications. The inclusion/exclusion criteria yielded 348 articles, 80 of which are cited herein.

Conclusions

Research has showed a high prevalence of xerostomia and SGH in VE. Common etiologies include medications, poor general health, female gender, and age. Gaps still exist in the evaluation of dry mouth in VE. Nonetheless, oral dryness will remain an important health issue as life expectancy increases.

Section snippets

Materials and Methods

To ensure the comprehensive retrieval of all relevant research, the services of an experienced library scientist were enlisted. One of the authors (M.D.) duplicated the search for accuracy. Search strategies were conducted in PubMed only (from 1989 to May 2010), and the search was expanded to include salivary hypofunction, dry mouth, and salivary dysfunction. The following MeSH headings were individually combined with this prior category using boolean operators: demographics, epidemiology,

Prevalence of xerostomia and SGH in VE

Our literature search resulted in studies on VE, including community dwelling elders, institutionalized elders, and elders with various medical conditions. Table I summarizes the results. Studies conducted in the general public are also included for reference.

The prevalence of xerostomia in the general public ranged from 5.5% to 39%, and prevalence among community-dwelling elders ranged from 17% to 40%. In the institutionalized elders, the prevalence ranged from 20% to 72%. In the elders

Discussion

Current research clearly demonstrates that VE are at a higher risk of suffering from subjective and objective oral dryness owing to the characteristics of this unique population. All predisposing factors of dry mouth may work synergistically to create a “perfect storm” for the VE and clinicians to manage.

The “vulnerability” of VE includes medication and polypharmacy, diseases and conditions, age, reduced salivary capacity, being female, and limited resources. As stressed by Locker, these

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