Many common drugs that cause dry mouth can be leaving millions of people at an increased risk for tooth decay. Researchers at the University of Rochester say more than 600 medications create dry mouth. They tested the affect the drug clonidine, a medicine used for treating high blood pressure in adults and hyperactivity in children, had on tooth decay. Researchers found that rats, which develop cavities similar to humans, that were given clonidine had an increase in cavities of 84 percent. The cause is twofold.
Saliva washes away sugars and other substances that promote cavities.
In addition, a dry mouth can also start an unfortunate cycle. It causes people to drink liquids constantly, oftentimes juices or colas that contain sugar and are acidic, which also promotes tooth decay. You have twice as much lymph in your body as you do blood. The lymph system is made to cleanse your body. I am taking most of this out of Dr. Schultz writings although there are libraries of studies and writings that substantiate everything he writes.