If you have chronic jaw pain, you may be one of an estimated 10 million Americans suffering from temporomandibular joint disorders (TMD). If so, it's quite possible you're also coping with other health conditions.

TMD is an umbrella term for disorders affecting the temporomandibular (jaw) joints, muscles and adjoining tissues. The most common symptoms are limited jaw function and severe pain. Determining the causes for these disorders can be difficult, but trauma, bite or dental problems, stress and teeth clenching habits seem to be the top factors. Women of childbearing age are most susceptible to these disorders.

In recent years we've also learned that many people with TMD also experience other conditions. In a recent survey of TMD patients, two-thirds reported having three or more other health conditions, the most frequent being fibromyalgia, chronic fatigue syndrome, rheumatoid arthritis or chronic headaches. Researchers are actively exploring if any systemic connections exist between TMD and these other conditions, and how these connections might affect treatment changes and advances for all of them including TMD.

In the meantime, there remain two basic approaches for treating TMD symptoms. The most aggressive and invasive approach is to surgically correct perceived defects in the jaw structure. Unfortunately, the results from this approach have been mixed in their effectiveness, with some patients even reporting worse symptoms afterward.

The more conservative approach is to treat TMD orthopedically, like other joint problems. These less invasive techniques include the use of moist heat or ice to reduce swelling, physical therapy and medication to relieve pain or reduce muscle spasming. Patients are also encouraged to adopt softer diets with foods that are easier to chew. And dentists can also provide custom-fitted bite guards to help ease the stress on the joints and muscles as well as reduce any teeth grinding habits.

As we learn more about TMD and its relationship to other health conditions, we hope to improve diagnosis and treatment. Until then, most dentists and physicians recommend TMD patients try the more conservative treatments first, and only consider surgery if this proves unsatisfactory. It may take some trial and error, but there are ways now to ease the discomfort of TMD.

If you would like more information on the causes and treatments of TMD, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Chronic Jaw Pain and Associated Conditions.”

Every year U.S. dentists perform around 25 million root canal treatments and save countless teeth from the ravages of decay. But if you search "root canal" on the Internet, you might encounter an unsettling charge against this tooth-saving treatment—that it causes cancer.

Root canal treatments are routinely used when tooth decay has infected the pulp, the innermost layer of a tooth. During the procedure, we access the pulp and remove all the infected tissue. We then fill the empty pulp and root canals, seal the access hole and later crown the tooth to prevent further infection. Without this intervention, the decay can continue to advance toward the roots and supporting bone, putting the tooth in imminent danger of loss.

So, is there any credibility to this claim that root canal treatments cause cancer? In a word, no: there's no evidence of any connection between root canal treatments and cancer—or any other disease for that matter. On the contrary: root canals stop disease.

As with other types of urban legends and internet hype, the root canal-cancer connection may have arisen from another discredited idea from the early 20th Century. A dentist named Weston Price promoted the notion that leaving a "dead" organ in the body led to health problems. From his perspective, a root canaled tooth with its removed pulp tissue fit this criterion.

In the mid-1950s, dentistry thoroughly examined Dr. Weston's theory pertaining to treatments like root canals. The Journal of the American Dental Association devoted an entire issue to it and found after rigorous scientific inquiry that the theory had no validity in this regard. Another study in 2013 confirmed those findings. In fact, the later study instead found that patients who underwent a root canal treatment had a 45 percent reduction in oral cancer risk.

Given the freewheeling nature of the Internet, it's best to speak with a dental professional about your oral health before trusting a post or article you've found online. Not only are they more informed than an unverified online source, they would certainly not knowingly subject you to a procedure to save a tooth at the expense of your health.

If you would like more information on root canal treatment, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Root Canal Safety.”

If you're one of the millions of people wearing an oral appliance, you already know how important it is to your dental health. Whatever the purpose—replacing teeth, stopping teeth grinding or guarding against injury—you want to get the most and longest service from it. That means showing your appliance some tender loving care on a regular basis.

It doesn't require a lot of time and effort to clean and maintain your oral appliance. But there are some pitfalls that could lead to greater wear and tear and just outright damage. Here are 3 things you should be on the alert for to keep your appliance doing its job for you.

Be careful how you clean it. Your appliance might resemble natural oral tissue, but it's not—so don't use toothpaste. Toothpaste contains abrasives, which are fine for tooth enamel but damaging to materials in your appliance. Instead, use dish detergent, hand soap or a specialized cleaner. Don't use hot or boiling water, which could soften any plastic and distort the appliance's mouth fit. Nix the bleach too, which can fade colored portions of the appliance that mimic gum tissue.

Don't wear them 24/7 unless your dentist advises. Depending on the type and function of your appliance, you shouldn't wear them around the clock unless your dentist advises otherwise. Dentures are usually removed at night while you sleep to help prevent bacterial growth. Keeping them out at night -and keeping them clean—will help lower your risk of dental disease. One caveat, though: there are some concerns today about the effect of keeping dentures out of the mouth at night on sleep apnea. It's a good idea, then, to discuss the issue with your dentist regarding taking dentures out at night.

Prevent accidental drops on hard surfaces. Chewing forces are considerable, but your appliance is designed to take it. The same can't be said, though, if they accidentally fall on a hard surface—the fall could crack or break them. To protect against this, be sure to put a soft towel or cloth in your sink basin while you're cleaning your appliance. And don't place it on a night stand or low surface where it could be knocked off accidentally by a child, a pet or you. A sudden accident like this could be costly.

If you would like more information on extending the life of your oral appliance, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “10 Tips for Cleaning Your Oral Appliance.”