Xerostomia

Xerostomia is the subjective sensation of dryness in the mouth.1 This perception may or may not be accompanied by a reduction in the quantity of saliva produced or its quality. Saliva plays a critical role in oral health. It protects against bacteria and fungi, transports nutrients and digestive enzymes, lubricates the oral cavity, remineralises teeth, and aids in chewing, swallowing and speaking.2 Xerostomia is a common disorder, affecting approximately 20% of older Australians.3 Common causes include medicines, radiotherapy for head or neck cancer, and specific diseases of the salivary glands. Xerostomia contributes negatively to oral health, and can also adversely affect quality of life. This article will briefly discuss the causes, evaluation, and management of xerostomia.