Posts for: February, 2020
Orthodontics can produce an amazing smile transformation. With today’s advanced appliances and techniques even the most difficult malocclusions (bad bites) can be overcome. All of this innovation, however, depends on one basic anatomical fact: though firmly set in the mouth, our teeth can still move.
Teeth are actually held in place by the periodontal ligament, a strong, elastic tissue that attaches to them through tiny collagen fibers on one side of the ligament and to the jawbone with similar fibers on the other side. When pressure is placed against a tooth, the bone on the opposite side of the force begins to dissolve (resorb), allowing the tooth to move. As it moves, new bone is built up behind the tooth, to stabilize it. Orthodontists take advantage of this natural mechanism through orthodontic hardware like braces that applies pressure in the desired direction of movement, while the ligament and bone do the rest.
There is, though, a downside to this process. The teeth, bone and gum tissues can contain a kind of “memory” for the former natural position of the teeth. Over time, the lower front teeth tend to take a gradual migratory movement back towards their original position. Also, as we age the lower front teeth may crowd each other as there is a genetic influence for teeth to move to the midline of the face, causing a pressure that allows the skinny lower front teeth to slip behind each other. As a result of both of these tendencies, corrected teeth may retreat from their new positions.
To stop these tendencies, we use an appliance known as a retainer after braces or other hardware is removed. As the name implies, this appliance “retains” the teeth in their new position. For structural “memory,” the retainer will keep the teeth in their new position until the impulse to return to the old one has faded, about eighteen months. Retainers can also slow or stop the natural genetic influence of movement, but it may mean wearing a retainer for an indefinite period, especially individuals who’ve undergone orthodontic treatment later in life.
The length of time you’ll need to wear a retainer after braces — and what type, whether a removable appliance or one permanently attached — will depend on a number of factors including the type of malocclusion, your individual mouth structure and age. We’ll recommend the best option that ensures the best chance of keeping your teeth in their new position.
If you would like more information on retainers after orthodontic 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 “Why Orthodontic Retainers?”
Your gums play an important role in dental function and health. Not only do they help anchor teeth in the jaw, the gums also protect tooth roots from disease.
But you can lose that protective covering if your gums recede or shrink back from the teeth. An exposed tooth is more susceptible to decay, and more sensitive to temperature and pressure.
Here are 4 causes for gum recession and what you can do about them.
Gum disease. The most common cause for gum recession is a bacterial infection called periodontal (gum) disease that most often arises from plaque, a thin film of bacteria and food particles accumulating on teeth. Gum disease in turn weakens the gums causes them to recede. You can reduce your risk for a gum infection through daily brushing and flossing to remove disease-causing plaque.
Genetics. The thickness of your gum tissues is a genetic trait you inherit from your parents. People born with thinner gums tend to be more susceptible to recession through toothbrush abrasion, wear or injury. If you have thinner tissues, you’ll need to be diligent about oral hygiene and dental visits, and pay close attention to your gum health.
Tooth eruption. Teeth normally erupt from the center of a bony housing that protects the root. If a tooth erupts or moves outside of this housing, it can expose the root and cause little to no gum tissue around the tooth. Moving the tooth orthodontically to its proper position could help thicken gum tissue and make them more resistant to recession.
Aggressive hygiene. While hard scrubbing may work with other cleaning activities, it’s the wrong approach for cleaning teeth. Too much force applied while brushing can eventually result in gum damage that leads to recession and tooth wear. So, “Easy does it”: Let the gentle, mechanical action of the toothbrush bristles and toothpaste abrasives do the work of plaque removal.
While we can often repair gum recession through gum disease treatment or grafting surgery, it’s much better to prevent it from happening. So, be sure you practice daily brushing and flossing with the proper technique to remove disease-causing plaque. And see your dentist regularly for cleanings and checkups to make sure your gums stay healthy.
If you would like more information on proper gum care, 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 “Gum Recession.”
The movie Bohemian Rhapsody celebrates the iconic rock band Queen and its legendary lead vocalist, Freddie Mercury. But when we see pictures of the flamboyant singer, many fans both old and new may wonder—what made Freddie’s toothy smile look the way it did? Here’s the answer: The singer was born with four extra teeth at the back of his mouth, which caused his front teeth to be pushed forward, giving him a noticeable overbite.
The presence of extra teeth—more than 20 primary (baby) teeth or 32 adult teeth—is a relatively rare condition called hyperdontia. Sometimes this condition causes no trouble, and an extra tooth (or two) isn’t even recognized until the person has an oral examination. In other situations, hyperdontia can create problems in the mouth such as crowding, malocclusion (bad bite) and periodontal disease. That’s when treatment may be recommended.
Exactly what kind of treatment is needed? There’s a different answer for each individual, but in many cases the problem can be successfully resolved with tooth extraction (removal) and orthodontic treatment (such as braces). Some people may be concerned about having teeth removed, whether it’s for this problem or another issue. But in skilled hands, this procedure is routine and relatively painless.
Teeth aren’t set rigidly in the jawbone like posts in cement—they are actually held in place dynamically by a fibrous membrane called the periodontal ligament. With careful manipulation of the tooth, these fibers can be dislodged and the tooth can be easily extracted. Of course, you won’t feel this happening because extraction is done under anesthesia (often via a numbing shot). In addition, you may be given a sedative or anti-anxiety medication to help you relax during the procedure.
After extraction, some bone grafting material may be placed in the tooth socket and gauze may be applied to control bleeding; sutures (stitches) are sometimes used as well. You’ll receive instructions on medication and post-extraction care before you go home. While you will probably feel discomfort in the area right after the procedure, in a week or so the healing process will be well underway.
Sometimes, dental problems like hyperdontia need immediate treatment because they can negatively affect your overall health; at other times, the issue may be mainly cosmetic. Freddie Mercury declined treatment because he was afraid dental work might interfere with his vocal range. But the decision to change the way your smile looks is up to you; after an examination, we can help you determine what treatment options are appropriate for your own situation.
If you have questions about tooth extraction or orthodontics, please contact our office or schedule a consultation. You can read more in the Dear Doctor magazine articles “Simple Tooth Extraction” and “The Magic of Orthodontics.”