Posts for: October, 2020
You can't correct a poor bite with braces or clear aligners overnight: Even the most cut-and-dried case can still require a few years to move teeth where they should be. It's a welcome relief, then, when you're finally done with braces or aligner trays.
That doesn't mean, however, that you're finished with orthodontic treatment. You now move into the next phase—protecting your new smile that took so much to gain. At least for a couple of more years you'll need to regularly wear an orthodontic retainer.
The name of this custom-made device explains its purpose: to keep or “retain” your teeth in their new, modified positions. This is necessary because the same mechanism that allows us to move teeth in the first place can work in reverse.
That mechanism centers around a tough but elastic tissue called the periodontal ligament. Although it primarily holds teeth in place, the ligament also allows for tiny, gradual tooth movement in response to mouth changes. Braces or aligner trays take advantage of this ability by exerting pressure on the teeth in the direction of intended movement. The periodontal ligament and nature do the rest.
But once we relieve the pressure when we remove the braces or aligners, a kind of “muscle memory” in the ligament can come into play, causing the teeth to move back to where they originally were. If we don't inhibit this reaction, all the time and effort put into orthodontic treatment can be lost.
Retainers, either the removable type or one fixed in place behind the teeth, gently “push” or “pull” against the teeth (depending on which type) just enough to halt any reversing movement. Initially, a patient will need to wear their retainer around the clock. After a while, wear time can be reduced to just a few hours a day, usually during sleep-time.
Most younger patients will only need to wear a retainer for a few years. Adults who undergo teeth-straightening later in life, however, may need to wear a retainer indefinitely. Even so, a few hours of wear every day is a small price to pay to protect your beautiful straightened smile.
If you would like more information on orthodontic retainers, 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.”
The humble squirrel—darlings to some, bird feeder-robbing nuisances to others—has its own month. Since 1995, the Squirrel Lovers Club of Chicago has celebrated October as Squirrel Awareness Month to pay tribute to this diverse family of rodents with over 270 species. It's also an opportunity to indulge in our favorite “squirrelly” fact: Squirrels' teeth don't stop growing.
And we do mean grow. A squirrel's four front incisors increase about 6 inches a year—a good thing since squirrels put those teeth through their paces gnawing through hard-shelled nuts and seeds. If they didn't keep growing, you'd see plenty of squirrels with worn-to-nothing front teeth.
We humans have some cause to be envious because, unlike squirrels, our permanent teeth stop growing by the time we reach adulthood. That could be a problem since nearly all of us encounter tooth wear as we age.
And it could be even worse. Bad habits like crunching ice, biting into hard foods or using our teeth as tools can contribute to accelerated wear. Some people also involuntarily clench or grind their teeth, creating higher than normal pressure that can wear down teeth.
Suffice it to say, it's worth the effort to quit conscious bad dental practices to prevent your teeth from wearing faster than normal. A teeth-grinding habit, though, may require more than willpower: We'll need to look at other ways to reduce its effect on your teeth.
First, you may want to try to reduce chronic stress, the top contributor to adult teeth grinding. Better stress management with the help of counseling, relaxation techniques, biofeedback or group therapy can all help reduce the occurrence of this destructive habit.
Such efforts, though, can take time. In the meantime, we may be able to help you reduce the effect of a grinding habit with a custom-made mouth guard. This plastic guard worn in the mouth prevents teeth from making hard contact with each other during grinding, and so it reduces the damaging forces that can wear down teeth.
By the way, if you've already experienced excessive tooth wear, not all hope is lost. We may be able to restore your teeth to normal length with the help of bonded porcelain veneers or crowns. After a thorough evaluation, we can give you options for turning back the “age clock” on your smile.
Our teeth may not continuously grow like squirrels', but we can still protect them from the effects of excessive wear. Good dental practices and habits—and restorative measures when necessary—can keep your smile looking as young as ever.