“Your mouth is connected to the rest of your body,” says Anthony Iacopino, dean of the University of Manitoba Faculty of Dentistry and a spokesperson for the American Dental Association.
“What we see in the mouth can have a significant effect on other organ systems and processes in the body. And the reverse is also true: Things that are going on systemically in the body can manifest in the mouth.”
So stay attuned to the following warning messages, and have worrisome symptoms checked out by a dentist or doctor.
1: White webbing inside cheeks
Sign of: Lichen planus
The last thing you might expect to discover while brushing your teeth is a skin disease. But it happens. Lichen planus, whose cause is unknown, is a mild disorder that tends to strike both men and women ages 30 to 70. The mucus membranes in the mouth are often a first target.
Oral lichen planus looks like a whitish, lacy pattern on the insides of the cheeks. (The name comes from the same roots as tree lichen, a lichen that has a similar webbed, bumpy appearance.) Seventy percent of lesions appear in the mouth before they strike other parts of the body, says professor Anthony Iacopino.
What else to look for: Another common area where a lichen planus rash may appear is the vagina. Lichen planus often goes away on its own, but sometimes treatment is necessary.
2: Cracking, crumbling teeth
Sign of: Gastroesophageal reflux disease (GERD)
Older adults, especially, are vulnerable to teeth that appear to be cracking or crumbling away. The enamel becomes thin and almost translucent. But this erosion isn’t a normal consequence of aging. In fact, it can happen at any age.
Disintegrating teeth are usually caused by acid that’s coming up from the stomach and dissolving them, Iacopino says. The cause: Gastroesophageal reflux disease (GERD, also called acid reflux disease). GERD causes stomach acid to back up into the esophagus — and from there, it’s a short distance to the mouth for some of the damaging acid. GERD is a chronic disorder caused by damage or other changes to the natural barrier between the stomach and the esophagus.
What else to look for: Dry mouth and heartburn are related GERD symptoms. (But in an older adult in someone else’s care — in a nursing home, for example — these complaints may go unreported.) Cracking or chipping teeth in a younger person is also a telltale sign of bulimia, the eating disorder in which the sufferer causes herself (or himself) to vomit before digesting. Same net result: Stomach acid washes up into the mouth, over time disintegrating the tooth enamel.
3: Sores that won’t go away
Sign of: Oral cancer
Many people bite the insides of their mouth as a nervous habit. Others sometimes bite the gum accidentally, creating a sore. But when an open sore in the mouth doesn’t go away within a week or two, it always warrants showing to a dentist or doctor. “We all injure our oral tissues, but if an area persists in being white or red rather than the normal healthy pink, this needs to be evaluated to rule out oral cancer,” says Susan Hyde, an associate professor of clinical dentistry at the University of California, San Francisco, School of Dentistry.
More than 21,000 men and 9,000 women a year are diagnosed with oral cancer, according to the National Cancer Institute. Most are over age 60. Oral cancer has a survival rate of only 35 percent, Iacopino says, but this is mainly because cases are often detected too late. Smokers are six times more likely to develop oral cancer, but one in four oral cancers develop in non-smokers.
What else to look for: Suspicious oral ulcers tend to be raised sores and often have red or white (or red and white) borders. They may lurk underneath the tongue, where they’re hard to see. Bleeding and numbness are other signs, but sometimes the only sign is a sore that doesn’t seem to go away. A biopsy usually follows a visual check.
4: Gums growing over teeth
Sign of: Medication problems
If you notice your gum literally growing over your tooth, and you’re taking a medication for heart disease or seizures or you take drugs to suppress your immune system (such as before a transplant), it’s well worth mentioning this curious development to your prescribing doctor.
“A swelling of the gums to where it grows over the teeth is a sign the dosage or the medicationneed to be adjusted,” the ADA’s Anthony Iacopino says. Certain drugs can stimulate the growth of gum tissue. This can make it hard to brush and floss, inviting tooth decay and periodontal disease.
What else to look for: The overgrowth can cause an uncomfortable sensation. In extreme cases, the entire tooth can be covered.
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