Spittle, Drool, and Slobber

Last week I was in my office on break and eating a peanut butter cracker snack. As I was chewing the cracker got caught in the back on my throat and I was beginning to wonder if I was ever going to be able to swallow. At that very moment my mouth began to water up and the food bolus slid easily down to make room for another cracker. Once again saliva came to the rescue.

Dentists have a love-hate relationship with saliva. While saliva is always “in the way” during dental procedures we wish there was more saliva for our patients with dry mouth. Let’s look at the functions of saliva to get an appreciation of this important lubricant and discuss ways of dealing with dry mouth.

During chewing the saliva is lubricating the movement of food from our mouths to the esophagus. Salivary enzymes (amylase and lipase) begin the digestion of starch and fat in our foods (remember the peanut butter crackers?). Saliva also aids in taste by trapping the thiols (flavor chemicals) contained in food and allowing taste buds to operate. Mucous is the ultimate body lubricant and is especially important to facilitate food movement. Interestingly, mucous is not digestible and once swallowed will pass through with the feces.

Saliva also protects and buffers the teeth from food acids and harmful bacteria. Dry mouth promotes bad bacteria because the pH levels become acidic. As it turns out a high acidic level turns on the bad bacteria and the incidence of cavities dramatically increases.

Other enzymes include lactoferrin, lysozyme, lactoperoxidase, and immunoglobulin A which aid the body’s immune response system. Furthermore, since saliva reflects what is going on in the rest of the body doctors can use saliva as a diagnostic medium. Wouldn’t it be great if you can spit into a vial rather than having blood draws or spinal taps to screen for disease? Saliva tests may ultimately be used to determine biomarkers for Alzheimer’s and heart disease. Research is continuing in this area.

Xerostomia is a condition of inadequate salivary output. It is characterized by an excessively dry pasty feeling in the mouth, difficulty with chewing and swallowing, burning oral tissues, and increased cavities and gum disease. Xerostomia is brought about by a lack of production from the salivary glands due to age, disease, radiation therapy, and medications (to name a few).
Unfortunately, there is no cure-only treatment. Occasionally, discontinuing certain medications will reverse the condition. Otherwise, your dentist will recommend over the counter remedies to help stimulate salivary output. For more serious cases a prescription of pilocarpine mg in a lollipop can be provided. This lollipop can be sucked on for 10-20 seconds and be placed back into its case for future use. The pilocarpine stimulates the tiny salivary glands to pump out more saliva. This has been very satisfying for my chronic dry mouth patients.

For answers to your dental questions, contact
Douglas Urban, D.D.S.
Cerritos, CA 90703
562 924-1523
DrDouglasUrban.com