What is Xerostamia?

Xerostamia is the scientific name for having little or no saliva in the mouth—in other words, having a dry mouth. A dry mouth can be caused by chemotherapy, radiation therapy, certain medications and auto-immune disorders. It occurs in about 30 percent of older Americans, but in less than 2 percent of Chinese seniors.

Some researchers say this is because Chinese people consume large amounts of green tea, which offers various health benefits. Others point out that tea is a non-acidic beverage made from water, and that acid and not consuming enough water are two major factors in dry mouth problems.

Saliva is important to dental health because without it, more cavities develop due to food particles and bacteria remaining in the mouth. Decreased saliva can also lead to heartburn, constipation and a dry, burning sensation of the tongue that can be very distressing.

Rinsing your mouth with water immediately after consuming any acidic food or beverage, then brushing your teeth a few minutes later is an excellent way to reduce your risk of developing cavities from having a dry mouth.

However, frequent sips of water are the best dry mouth prevention of all–water is as effective as saliva substitutes and whole lot less expensive. And scrupulous oral hygiene is essential for preventing dental decay caused by dry mouth.