What do scary speeches and cavities have in common? Xerostomia
By Lee Gurga,
DDS, Apple Dental Center
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[September 04, 2012]
Xero what? Xerostomia is the condition
of having a very dry mouth. It is a condition that affects up to
one-third of the adult population but is also seen in children.
Insufficient saliva can affect eating, swallowing and speaking. It
also leads to a significant increase in your risk of dental decay
and gum inflammation.
A healthy adult mouth secretes about two cups of saliva in a 24-hour
period. Saliva performs a number of functions that enhance eating:
It provides lubrication to aid in swallowing and enhances our
sensation of taste, in addition to containing digestive enzymes. It
protects the teeth from decay by providing a natural flushing action
to remove food particles and bacteria from the surface of the teeth.
It neutralizes the pH of the many acidic foods and beverages that
damage the enamel in the teeth. Saliva also keeps the gums and
tongue healthy by protecting against abrasion, irritation and germs.
Excessive mouth dryness is most often seen as a side effect of
medications. Over 400 prescription drugs inhibit salivary flow,
including many of the more commonly prescribed groups:
antihistamines, antidepressants, antihypertensives, analgesics,
decongestants and bronchodilators.
The volume of salivary flow is influenced by the nervous system.
We've all experienced a suddenly dry mouth in the face of a very
Many drugs interact with the central nervous system and similarly
suppress salivary production. Xerostomia can also be triggered by
psychological conditions, radiation therapy to the head and neck, or
by chronic diseases such as diabetes and rheumatoid arthritis.
Though we often have no choice about the medications we must take,
there are strategies to minimize the consequences of a dry mouth.
Diet can play a key role in managing a dry mouth. Avoid sticky
foods that adhere to the teeth. Limit intake of high sugar and
acidic beverages such as sodas, caffeinated beverages and alcohol.
Chewing gum and hard candy can stimulate salivary production, but be
sure they are sugar-free. Those that contain xylitol and sorbitol
can even inhibit tooth decay.
Drink plenty of water before and after eating to aid in digestion
and flushing the teeth.
Brushing after meals will limit the risk of tooth decay and bad
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There are several over-the-counter mouth rinses designed
especially for dry mouths, as well as saliva substitutes to aid in
swallowing and digestion. Your dentist may recommend prescription
fluoride varnish and toothpaste to minimize your risk of decay.
There are unfortunately not many effective strategies for
reversing a diminished salivary flow, but these simple strategies
should help to alleviate the discomfort and damage of xerostomia.
Frequent dental checkups are a wise precautionary measure for
those with a dry mouth.
References: Dimensions of Dental Hygiene, January 2012, "Xerostomia
from A to Z," pp. 22-28.
[By LEE GURGA, DDS,
Apple Dental Center]
Lincoln Daily News disclaimer
Articles provided to Lincoln Daily News by Dr. Lee Gurga,
Apple Dental Center, are for information and education purposes
only. Articles are not intended to offer specific medical, dental or
legal advice to anyone. No guarantees or warranties are made
regarding any of the information contained in these articles. The
information contained here should be used in consultation with a
provider of your choice as needed, and no doctor-patient
relationship has been established.