Efficacy of auricular acupuncture in improving dry mouth among an institutionalised older population: A randomised controlled study

Aims To investigate the efficacy of applying auricular acupuncture (AA) treatment in improving dry mouth in institution‐dwelling older adults. Background Dry mouth (xerostomia) is a common distressing problem in older populations, especially for institution‐dwelling older adults that can affect oral health and quality of life. Design A randomised controlled trial was conducted from December 2020 to March 2021 and performed according to STRICTA guidelines extended from the CONSORT statement. Methods Older adults aged more than 65 years were randomly allocated to an AA group (n = 37) with an 8‐week actual auricular points treatment or a control group (n = 38) receiving sham auricular point acupuncture. Measurements comprised a subjective assessment of the level of dry mouth as assessed by a visual analogue scale in a xerostomia questionnaire, and an objective assessment of the physiological wetness of the lingual mucosa measured with a moisture‐checking device. A generalised estimating equation model was used for data analyses. Results After completing an 8‐week AA intervention stimulating the Shenmen, Point Zero and Salivary Gland 2‐prime points, the AA group exhibited significantly improved subjective symptoms of dry mouth comprised of difficulty speaking (B = −6.47, p