Posts for: April, 2019
Applying braces or clear aligners to move misaligned teeth is only part of an orthodontist's overall mission to eliminate poor bites (malocclusions). Sometimes a malocclusion isn't caused by the teeth at all—the size of the jaw is the problem!
One type in particular, a cross-bite, often happens because the upper jaw has developed too narrowly. As a result, many of the upper teeth fit inside the lower, the opposite of normal. But a tool called a palatal expander can alleviate the problem if it's applied at an early enough age.
The device works because the upper jawbone initially forms as two halves that fit together along a center line in the roof of the mouth (the palate) running from the back of the mouth to the front. These two bone halves remain separate during childhood to facilitate jaw growth, but eventually fuse around puberty.
Consisting of two sets of wire arms joined together by a hinge mechanism in the middle, the expander device is positioned up against the palate. The orthodontist extends each arm to press against the inside of the back teeth, then adds more outward pressure by turning the mechanism in the middle with a small key. During wear, the patient or caregiver will turn the mechanism in the same way to keep up the pressure on the two sides of the jaw.
This continual pressure keeps the two bones moving away from each other and maintaining a center gap between them. In response, more bone forms on the two halves to fill the gap. In time, the newly formed bone should widen the jaw enough to correct any developing malocclusion.
Timing is everything with a palatal expander—if not used before the jaw bones fuse, the patient will need a surgical procedure to separate the bones to pursue treatment. To catch the problem early enough, children should have an orthodontic evaluation on or before they turn six. An orthodontist may be able to identify this or other emerging bite problems and intervene before it becomes worse. Taking this approach can help save you and your child more expensive orthodontic treatment down the road.
If you would like more information on correcting poor bites, 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 “Palatal Expanders: Orthodontics is more than just Moving Teeth.”
Some people are lucky — they never seem to have a mishap, dental or otherwise. But for the rest of us, accidents just happen sometimes. Take actor Jamie Foxx, for example. A few years ago, he actually had a dentist intentionally chip one of his teeth so he could portray a homeless man more realistically. But recently, he got a chipped tooth in the more conventional way… well, conventional in Hollywood, anyway. It happened while he was shooting the movie Sleepless with co-star Michelle Monaghan.
“Yeah, we were doing a scene and somehow the action cue got thrown off or I wasn't looking,” he told an interviewer. “But boom! She comes down the pike. And I could tell because all this right here [my teeth] are fake. So as soon as that hit, I could taste the little chalkiness, but we kept rolling.” Ouch! So what's the best way to repair a chipped tooth? The answer it: it all depends…
For natural teeth that have only a small chip or minor crack, cosmetic bonding is a quick and relatively easy solution. In this procedure, a tooth-colored composite resin, made of a plastic matrix with inorganic glass fillers, is applied directly to the tooth's surface and then hardened or “cured” by a special light. Bonding offers a good color match, but isn't recommended if a large portion of the tooth structure is missing. It's also less permanent than other types of restoration, but may last up to 10 years.
When more of the tooth is missing, a crown or dental veneer may be a better answer. Veneers are super strong, wafer-thin coverings that are placed over the entire front surface of the tooth. They are made in a lab from a model of your teeth, and applied in a separate procedure that may involve removal of some natural tooth material. They can cover moderate chips or cracks, and even correct problems with tooth color or spacing.
A crown is the next step up: It's a replacement for the entire visible portion of the tooth, and may be needed when there's extensive damage. Like veneers, crowns (or caps) are made from models of your bite, and require more than one office visit to place; sometimes a root canal may also be needed to save the natural tooth. However, crowns are strong, natural looking, and can last many years.
But what about teeth like Jamie's, which have already been restored? That's a little more complicated than repairing a natural tooth. If the chip is small, it may be possible to smooth it off with standard dental tools. Sometimes, bonding material can be applied, but it may not bond as well with a restoration as it will with a natural tooth; plus, the repaired restoration may not last as long as it should. That's why, in many cases, we will advise that the entire restoration be replaced — it's often the most predictable and long-lasting solution.
Oh, and one more piece of advice: Get a custom-made mouthguard — and use it! This relatively inexpensive device, made in our office from a model of your own teeth, can save you from a serious mishap… whether you're doing Hollywood action scenes, playing sports or just riding a bike. It's the best way to protect your smile from whatever's coming at it!
If you have questions about repairing chipped teeth, please contact us or schedule an appointment for a consultation. You can also learn more by reading the Dear Doctor magazine articles “Artistic Repair of Chipped Teeth With Composite Resin” and “Porcelain Veneers.”
April is National Stress Awareness Month. But what does stress have to do with dentistry? According to the American Academy of Sleep Medicine, if you have a Type A personality or are under a lot of stress, you are more likely to suffer from a condition called bruxism, which means you habitually grind or gnash your teeth. One in ten adults grind their teeth, and the rate is much higher in stressful professions. In fact, the bruxism rate is seven times higher among police officers!
Many people grind their teeth in their sleep without realizing it, so how would you know if you are a "sleep bruxer"? If your spouse frequently elbows you in the ribs because of the grinding sounds you make, that could be your first clue. Unfortunately, dental damage is another common sign. Some people find out they are nighttime teeth grinders only when they are examined by a dentist since bruxing often leads to wear patterns on the teeth that only happen because of this behavior. Other complications can also develop: The condition can interfere with sleep, result in headaches and cause soreness in the face, neck or jaw. Chronic or severe nighttime teeth grinding can damage dental work, such as veneers, bridgework, crowns and fillings, and can result in teeth that are worn down, chipped, fractured or loose.
The most common treatment is a custom-made night guard made of high-impact plastic that allows you to sleep while preventing your upper and lower teeth from coming into contact. Although a night guard will protect your teeth and dental work, it won't stop the grinding behavior. Therefore, finding and treating the cause should be a priority.
The Bruxism Association estimates that 70 percent of teeth grinding behavior is related to stress. If you are a bruxer, you can try muscle relaxation exercises, stretching and breathing exercises, stress reduction techniques and, where feasible, any lifestyle changes that can allow you to reduce the number of stressors in your life. Prescription muscle relaxants may also help. In addition, teeth grinding may be related to sleep apnea. This possibility should be investigated since sleep apnea can have some serious health consequences—we offer effective treatments for this condition as well.
We can spot signs of bruxism, so it's important to come in for regular dental checkups. We look for early indications of dental damage and can help you protect your smile. If you have questions about teeth grinding or would like to discuss possible symptoms, please contact our office or schedule an appointment for a consultation. You can read more in the Dear Doctor magazine articles “Teeth Grinding” and “Stress & Tooth Habits.”