Cosmetic Dentistry Directory Blog

Many general dentistry patients and cosmetic dentistry patients complain of persistent dry mouth, the medical term for which is xerostemia. While this is not typically a severe symptom or a significant detriment to your health or quality of life, xerostemia is important for dentists and dental hygienists to recognize for two reasons. First, lack of saliva in the mouth can lead to more cavities and can increase the rate of failure for dental restorations such as dental crowns and porcelain veneers. Second, xerostemia can be a symptom of an underlying condition that has yet to be diagnosed.

Causes of Xerostemia (Dry Mouth)

About ninety percent of the saliva your mouth produces comes from two salivary glands: the parotid (in the far back of your mouth on both sides) and the submandibular (under the jawbone). The rest comes from the sublingual salivary gland (under the tongue) and about 600 other small accessory salivary glands.

While the saliva itself comes from these glands, the production and flow of saliva is actually controlled by your brain. As your brain perceives or anticipates the taste and feel of food in your mouth, it increases the flow of saliva. The brain also reduces salivary flow due to anxiety and other stressful emotions. Because saliva is crucial to speech, maintaining the pH balance of your mouth, and fighting bacteria, persistent lack of saliva can be problematic.

Xerostemia can reflect various underlying conditions, such as Sjögren's Syndrome, diabetes, and salivary gland dysfunction. In addition, dry mouth is a common side effect of many medications. If your xerostemia is severe enough to be affecting your teeth or your ability to taste and speak, your general dentist or cosmetic dentist may recommend addressing the issue. For example, you may decide to try a different medication if your xerostemia is a prescription drug side effect. If your dry mouth is the result of an underlying medical condition, your dentist can refer you to a physician who can help.

If you are worried that xerostemia might be affecting your dental health, please contact us to find a general dentist or cosmetic dentist in your area.