Dry mouth(Xerostomia) means you don't have enough saliva, or spit, to keep your mouth moist. Everyone has a dry mouth once in a while, especially if you're nervous, upset or under stress.
About one in four or five Australians has dry mouth syndrome, which means not having enough saliva in the mouth. Many Australians suffer from a dry mouth, which can cause problems with oral hygiene and tooth decay. This condition has been found in over 20-25% of older South Australians.
Treatment includes sipping water or other sugar-free juices frequently, Stimulate the flow of your saliva by eating foods, chewing sugarless gum, acid-tasting, sugarless (diabetic-type) candies. At least 400 kinds of medications have been reported to cause dry mouth.
Salivary flow is particularly reduced when two or more hyposalivatory drugs are taken simultaneously. Hyposalivation may be diagnosed with the aid of salivary collection tests (called sialometry), while other tests as scintigraphy or sialography.