Posts for tag: orthodontics
Teeth crowding is a difficult bite problem (malocclusion) that often involves the entire jaw structure to be evaluated. Normally occurring when the jaw doesn’t have adequate space for normal tooth eruption, teeth coming in later put pressure on other teeth, causing them to develop improperly.
Crowding also makes it difficult to realign teeth with braces because there’s simply not enough room for sufficient movement to take place. The solution may then be to consider the removal of some of the teeth to create enough space for orthodontic treatment.
Not just any tooth can be removed, however — we must first conduct a careful analysis to determine which can be removed to facilitate optimum movement of the remaining teeth without disrupting normal mouth function or affecting appearance. The teeth most frequently removed for this purpose are the bicuspids, located between the cuspids or eyeteeth (which are positioned directly under the eyes) and the molars, the largest teeth in the back of the mouth. Sometimes one premolar tooth on each side of the jaw can be removed without sacrificing future form or function.
There are a few important considerations we must keep in mind when extracting teeth for orthodontic reasons; perhaps the most important is preserving bone at the extraction site. Because continuing bone growth depends on the forces generated by teeth when we bite or chew, bone near a missing tooth socket will tend to diminish over time. If there’s insufficient bone during orthodontic treatment, it may result in gum recession and root exposure — not only damaging to the teeth themselves but also to a person’s smile appearance. To avoid this, we sometimes will consider inserting a bone graft, which will stimulate bone growth, into the empty socket immediately after extraction. While this isn’t commonly done, it’s being considered if the patient’s bone is thin and a concern during healing.
We must also consider how to accommodate other, unrelated tooth loss to assure the final result is visually appealing. It may be necessary in these cases to maintain the space at the missing tooth site for a future restoration once the orthodontics is completed. This takes planning as well as the use of restorations like dental implants, bridges or partial dentures.
Regardless of your bite issues, the field of orthodontics has the appliances and techniques to overcome even the most complicated condition. When necessary, using procedures like tooth extraction can help turn an unappealing, dysfunctional bite problem into a beautiful smile.
If you would like more information on orthodontic teeth extractions, 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 Removal for Orthodontic Reasons.”
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?”
Lately, you’ve noticed your young child’s primary teeth don’t appear to be coming in straight. Is it a problem?
The answer to that question is best answered by an early orthodontic evaluation performed by an orthodontist. It’s advisable for a child as young as 7 to undergo such an exam.
While a child’s primary teeth have a short life span of a few years, that doesn’t make them less important than the permanent teeth that replace them. In fact, they’re extremely influential for permanent tooth development — each one serves as a guide for its replacement to erupt in a proper position. A future malocclusion (bad bite) that becomes more apparent later in life would have been well underway years before.
Orthodontists have the training and expertise to spot these emerging problems in their early stages. Early detection can reduce the extent — and costliness — of future orthodontic treatment by introducing preventative or interceptive measures — even while there’s still a mix of primary and permanent teeth in the mouth. For example, a child wearing a simple type of retainer that influences the development of the bite could minimize or even correct a growing malocclusion.
You can also take advantage of opportunities to discover potential orthodontic problems early through a general or pediatric dentist. By having regular dental cleanings and checkups, the dentist might observe early bite development that should be reviewed by an orthodontist. If not, it’s still a good idea to undergo an orthodontic evaluation no later than age 7.
Given the stage of jaw and facial structure development, waiting until puberty to focus on orthodontic problems may be too late for some problems — and much more expensive than if caught and treated earlier. Getting ahead of these issues earlier in your child’s dental development will help ensure they’ll have a healthy bite throughout their life.
If you would like more information on early orthodontic monitoring, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine articles “Early Orthodontic Evaluation” and “Preventative & Cost Saving Orthodontics.”
Moving your teeth to a more functional and attractive alignment is a big undertaking. You can invest months — even years — and a lot of expense to correct a bad bite. But all that effort could be for nothing if your teeth return to their original positions.
The very aspect of dental physiology that makes orthodontics possible can work against you in reverse. Your teeth are not actually rigidly fixed in the bone: they're held in place by an elastic gum tissue known as the periodontal ligament. The ligament lies between the tooth and the bone and attaches to both with tiny fibers.
While this mechanism holds the teeth firmly in place, it also allows the teeth to move in response to changes in the mouth. As we age, for example, and the teeth wear, the ligament allows movement of the teeth to accommodate for the loss of tooth surface that might have been created by the wear.
When we employ braces we're changing the mouth environment by applying pressure to the teeth in a certain direction. The teeth move in response to this pressure. But when the pressure is no longer there after removing the braces or other orthodontic devices, the ligament mechanism may then respond with a kind of “muscle memory” to pull the teeth back to where they were before.
To prevent this, we need to help the teeth maintain their new position, at least until they've become firmly set. We do this with an oral appliance known as a retainer. Just as its name implies it helps the teeth “retain” their new position.
We require most patients to initially wear their retainer around the clock. After a while we can scale back to just a few hours a day, usually at nighttime. Younger patients may only need to wear a retainer for eighteen months or so. Adults, though, may need to wear one for much longer or in some cases permanently to maintain their new bite.
Although having to wear a retainer can be tedious at times, it's a crucial part of your orthodontic treatment. By wearing one you'll have a better chance of permanently keeping your new smile.
If you would like more information on caring for your teeth after braces, 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 “The Importance of Orthodontic Retainers.”
If you're currently undergoing orthodontic treatment, you're no doubt looking forward to the day your braces come off. But that won't end your treatment just yet — you'll need to wear a retainer.
Teeth are held secure in the bone of the jaw by an elastic tissue known as the periodontal ligament. As the braces “pull” the teeth to their new position, the ligament stretches and the bone remodels around the teeth. But the ligament also has a tendency to rebound as the tension eases when the braces are removed. The teeth could then return to their original position, especially during the first few months.
To prevent this patients wear an orthodontic appliance known as a retainer. It maintains some of the tension once supplied by the braces to help keep or “retain” the teeth in their new position. Depending on your age and other factors, you'll have to wear one for at least eighteen months; some patients, especially adults, may have to wear one indefinitely.
You may be familiar with a removable retainer, one you can take in and out of your mouth. But there's another type called a bonded retainer that's fixed to the teeth and can only be removed by a dentist. With this retainer a dentist bonds a thin piece of wire to the back of the teeth where it can't be seen. You can feel it, though, with the tongue: an unusual sensation at first, but one easily grown accustomed to.
Unlike their removable counterparts, bonded retainers aren't noticeable, either to others or the wearer. They're especially appropriate for patients who may not be as diligent in wearing a removable retainer.
It does, though, have some disadvantages. The position of the wire running horizontally across several teeth can make flossing difficult. And as with any retainer, removing it could increase the risk of the teeth moving out of alignment.
There are a number of factors to discuss with your orthodontist about which type of retainer is best for your situation. If you do choose a bonded retainer, be sure you work with the dental hygienist on how best to floss the affected teeth. And if you do have it removed, have a removable retainer prepared so you can preserve that smile you've invested so much into obtaining.