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.”
Teeth whitening or bleaching is one of the most affordable and least invasive ways of improving your smile. Although the effect fades with time, whitening can make dull and dingy teeth more attractive in short order.
Teeth whitening is also unique among cosmetic dental procedures in that you can do it yourself at home. While professional bleaching solutions are stronger and capable of greater brightness and longevity, you can still achieve good results with a DIY kit.
If you decide to whiten at home, though, there are a few things to keep mind for a desirable and safe outcome. Here are 3 tips for successful DIY teeth whitening.
Follow the directions. It's not a good idea, both for a successful and safe outcome, to stray away from a kit manufacturer's recommended directions. FDA-approved home kits usually contain 10% or less of carbamide peroxide (one of the more common bleaching agents). That may not seem very strong but it's adequate within the recommended time it remains on your teeth to achieve an effective whitening effect. Exceeding those directions could permanently damage your tooth enamel.
Make sure a home kit will work on your staining. Home whitening kits only affect outer staining on tooth enamel. But dental discoloration can also arise from inside a tooth, often because of trauma, tetracycline use, or as a side effect of a root canal treatment. This kind of internal staining requires a special procedure usually performed by an endodontist to reduce it. So, see your dentist first to make sure your teeth are healthy enough for whitening and that a home kit will work for you.
Get your dentist's advice on home kits. There are a number of whitening applications on the market you can choose, so ask your dentist for recommendations. They can also give you some helpful tips on the whitening process to ensure you'll be safe and successful in your efforts.
Here's a couple of other things to remember to enhance your teeth whitening experience: whether you whiten your teeth at home or with the dentist, be sure you continue to care for your teeth with daily brushing and flossing. And, if you limit your consumption of foods and beverages known to stain teeth, you'll help extend the duration of your brighter smile.
If you would like more information on teeth whitening procedures, 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 “Tooth Whitening Safety Tips.”
The long-running hit show Dancing with the Stars has had its share of memorable moments, including a wedding proposal, a wardrobe malfunction, and lots of sharp dance moves. But just recently, one DWTS contestant had the bad luck of taking an elbow to the mouth on two separate occasions—one of which resulted in some serious dental damage.
Nationally syndicated radio personality Bobby Bones received the accidental blows while practicing with his partner, professional dancer Sharna Burgess. “I got hit really hard,” he said. “There was blood and a tooth. [My partner] was doing what she was supposed to do, and my face was not doing what it was supposed to do.”
Accidents like this can happen at any time—especially when people take part in activities where there’s a risk of dental trauma. Fortunately, dentists have many ways to treat oral injuries and restore damaged teeth. How do we do it?
It all depends on how much of the tooth is missing, whether the damage extends to the soft tissue in the tooth’s pulp, and whether the tooth’s roots are intact. If the roots are broken or seriously damaged, the tooth may need to be extracted (removed). It can then generally be replaced with a dental bridge or a state-of-the-art dental implant.
If the roots are healthy but the pulp is exposed, the tooth may become infected—a painful and potentially serious condition. A root canal is needed. In this procedure, the infected pulp tissue is removed and the “canals” (hollow spaces deep inside the tooth) are disinfected and sealed up. The tooth is then restored: A crown (cap) is generally used to replace the visible part above the gum line. A timely root canal procedure can often save a tooth that would otherwise be lost.
For moderate cracks and chips, dental veneers may be an option. Veneers are wafer-thin shells made of translucent material that go over the front surfaces of teeth. Custom-made from a model of your smile, veneers are securely cemented on to give you a restoration that looks natural and lasts for a long time.
It’s often possible to fix minor chips with dental bonding—and this type of restoration can frequently be done in just one office visit. In this procedure, layers of tooth-colored resin are applied to fill in the parts of the tooth that are missing, and then hardened by a special light. While it may not be as long-lasting as some other restoration methods, bonding is a relatively simple and inexpensive technique that can produce good results.
If you would like more information about emergency dental treatment, please contact us or schedule an appointment for a consultation. You can learn more by reading the Dear Doctor articles “The Field-Side Guide to Dental Injuries” and “Knocked Out Tooth.”
As your dental provider, we're always alert for signs of tooth decay or periodontal (gum) disease, the two leading causes of tooth loss. But we're also watching for less common conditions that could be just as devastating.
Root resorption falls into this latter category: it occurs when a tooth's root structure begins to break down and dissolve (or resorb). It's a normal process in primary ("baby") teeth to allow them to loosen and give way when permanent teeth are ready to erupt.
It's not normal, though, for permanent teeth. Something internally or—more commonly—externally causes the root structure to break down. External resorption usually occurs at the neck-like or cervical area of a tooth around the gum line. Known as external cervical resorption (ECR), it can first appear as small, pinkish spots on the enamel. These spots contain abnormal cells that cause the actual damage to the root.
We don't fully understand how root resorption occurs, but we have identified certain factors that favor its development. For example, it may develop if a person has experienced too much force against the teeth during orthodontic treatment. Injury to the periodontal ligaments, teeth-grinding habits or some dental procedures like internal bleaching may also contribute to later root resorption.
Early diagnosis is a major part of effective treatment for root resorption. Because it's usually painless and easily overlooked, resorption is often too difficult to detect in its early stages without x-rays—a good reason for regular dental exams. Beginning spots or lesions are usually small enough to surgically remove the tissue cells causing the damage and then filled with a tooth-colored filling material. If it has advanced further, we may also need to perform a root canal treatment.
At some point, the damage from root resorption can be too great, in which case it might be best to remove the tooth and replace it with a dental implant or similar restoration. That's why catching root resorption early through regular dental exams can give you the edge for saving your tooth.
If you would like more information on diagnosing and treating root resorption, 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 Resorption: An Unusual Phenomenon.”
April brings the perfect weather to get outside and play. Fittingly, April is also National Facial Protection Month. Whether you prefer softball or basketball, skateboarding or ultimate frisbee, don't forget your most important piece of equipment: a mouthguard to protect your face and your smile!
In an instant, a blow to the mouth can cause a dental injury that is painful to endure and expensive to treat. In just about any sporting activity, your mouth could come into contact with a piece of equipment, another person or the ground. That's why the American Dental Association and the Academy for Sports Dentistry recommend using a mouthguard when participating in any of over 30 activities, including some that aren't typically considered contact sports, like volleyball and bike riding.
Common sense, observation and scientific research support the use of mouthguards during sporting activities—but are the ones you get from your dentist really any better than the kind you can grab off the shelf at a sporting goods store or drugstore? The answer is yes!
In a 2018 experiment, researchers created a model of the human head to test how direct impact affects the teeth, jaws and skull. They compared the effects of impact when using no mouthguard, when using a custom-made mouthguard available from the dentist, and when using a stock mouthguard. They also tested mouthguards of different thicknesses. The results? The experimenters determined that any mouthguard is better than no mouthguard and that custom mouthguards available from the dental office are more effective than off-the-shelf mouthguards in protecting teeth, jaws and skull from impact. They also found that the thicker the mouthguard, the better the protection.
Although custom mouthguards are more expensive than the kind you can buy at the corner store, the difference in protection, durability, comfort and fit is well worth the investment. We consider your (or your child's) individual needs, take a precise model of your mouth and provide you with a custom-fit mouthguard of the highest quality material.
Don't ruin your game. A mouthguard can go a long way in protecting your teeth and mouth from injury. If you would like more information about a sports mouthguard, please contact us or schedule an appointment for a consultation. To learn more, read the Dear Doctor magazine articles “Mouthguards” and “An Introduction to Sports Injuries & Dentistry.”
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