Posts for: May, 2018
What do young saber tooth tigers, which have been extinct about 10,000 years, have in common with human kids today? At first glance, not a lot. Smilodon fatalis, the big cat of North America, reached adulthood at around age three and weighed up to 600 pounds. But these ice-age mammals are probably best known for their dagger-like canine teeth, which (as shown by many well-preserved skeletons) grew up to 7 inches long. And that’s where the comparison between kids and kitties gets interesting.
The toothy felines had primary (baby) teeth and adult teeth, which developed in a similar way to human dentition. The primary teeth came in first, persisted during the young cat’s development, and shared space in the mouth as the adult teeth were erupting (growing in) — with one big difference. According to a recent study reported in the academic journal PLOS ONE, those colossal canines grew at an astonishing rate: up to 6 millimeters per month! By comparison, human primary teeth emerge from the gums at around 0.7mm per month, while permanent teeth may grow up to 2mm per month.
It’s understandable why those tiger teeth developed so rapidly: Life in the Ice Age was hard, and predators needed every advantage just to stay alive. But while human baby teeth take longer to develop (and to go away), they, too, are vitally important.Â For one thing, the primary teeth let kids bite, chew, speak (and smile) properly, until they are replaced by adult teeth — a process that isn’t usually finished until a child reaches the age of 12-13. So those “baby” teeth allow kids to have good nutrition — and positive social interactions — for a significant part of childhood!
There’s another important thing primary teeth do before they’re gone: They help ensure that the succeeding teeth come in properly, by holding a space in the jaw that will later be filled by a permanent tooth. If baby teeth are lost prematurely, those spaces can close up, resulting in permanent teeth that emerge too close together, or in the wrong places. This condition, called malocclusion (bad bite), can usually be corrected by orthodontics. But it’s better to avoid the inconvenience (and cost) of braces, if possible.
That’s why it’s so important to take care of your child’s baby teeth. Even though they won’t be around forever, they have a vital role to play right now. So be sure proper attention is paid to your child’s oral hygiene: That means avoiding sugar, and remembering to brush and floss every day. And be sure to come in regularly for routine exams, cleanings, and needed care. It’s the best way to keep those little teeth from “going extinct” too soon!
If you have questions or concerns about your child’s baby teeth, please call our office to schedule a consultation. You can read more in the Dear Doctor magazine articles “Importance of Baby Teeth” and “Early Loss of Baby Teeth.”
If you think gum disease only happens to the other guy (or gal), think again. If you’re over 30 you have a 50-50 chance for an infection. After 65 the risk climbs to 70 percent.
Fortunately, we can effectively treat most cases of gum disease. But depending on its severity, treatment can involve numerous intensive sessions and possible surgery to bring the disease under control. So, why not prevent gum disease before it happens?
First, though, let’s look at how gum disease most often begins—with dental plaque, a thin film of bacteria and food particles built up on teeth and gum surfaces. If plaque isn’t consistently removed through daily brushing and flossing, it doesn’t take long—just a few days—for the bacteria to infect the gums.
While it’s not always easy to detect gum disease early on, there are signs to look for like red, swollen and tender gums that bleed easily when you brush or floss, and bad breath or taste. The infection is usually more advanced if you notice pus-filled areas around your gums or loose teeth. If you see any of these (especially advanced signs like loose teeth) you should contact us as soon as possible.
Obviously, the name of the game with prevention is stopping plaque buildup, mainly through daily brushing and flossing. Technique is the key to effectiveness, especially with brushing: you should gently but thoroughly scrub all tooth surfaces and around the gum line, coupled with flossing between teeth.
To find out how well you’re doing, you can rub your tongue along your teeth after you brush and floss—you should feel a smooth, almost squeaky sensation. You can also use plaque-disclosing agents that dye bacterial plaque a particular color so you can easily see surface areas you’ve missed. You can also ask us for a “report card” on how well you’re doing during your next dental visit.
Dental visits, of course, are the other essential part of gum disease prevention—at least every six months (or more, if we recommend) for cleaning and checkups. Not only will we be able to remove hard-to-reach plaque and tartar, we’ll also give your gums a thorough assessment. By following this prevention regimen you’ll increase your chances of not becoming a gum disease statistic.
If you would like more information on recognizing and treating gum disease, 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 “How Gum Disease Gets Started.”
On the big screen, Australian-born actress Margot Robbie may be best known for playing devil-may-care anti-heroes—like Suicide Squad member Harley Quinn and notorious figure skater Tonya Harding. But recently, a discussion of her role in Peter Rabbit proved that in real life, she’s making healthier choices. When asked whether it was hard to voice a character with a speech impediment, she revealed that she wears retainers in her mouth at night, which gives her a noticeable lisp.
“I actually have two retainers,” she explained, “one for my bottom teeth which is for grinding my teeth, and one for my top teeth which is just so my teeth don't move.”
Clearly Robbie is serious about protecting her dazzling smile. And she has good reasons for wearing both of those retainers. So first, let’s talk about retainers for teeth grinding.
Also called bruxism, teeth grinding affects around 10 percent of adults at one time or another, and is often associated with stress. If you wake up with headaches, sore teeth or irritated gums, or your sleeping partner complains of grinding noises at night, you may be suffering from nighttime teeth grinding without even being aware of it.
A type of retainer called an occlusal guard is frequently recommended to alleviate the symptoms of bruxism. Typically made of plastic, this appliance fits comfortably over your teeth and prevents them from being damaged when they rub against each other. In combination with stress reduction techniques and other conservative treatments, it’s often the best way to manage teeth grinding.
Orthodontic retainers are also well-established treatment devices. While appliances like braces or aligners cause teeth to move into better positions, retainers are designed to keep teeth from moving—helping them to stay in those positions. After active orthodontic treatment, a period of retention is needed to allow the bite to stabilize. Otherwise, the teeth can drift right back to their old locations, undoing the time and effort of orthodontic treatment.
So Robbie has the right idea there too. However, for those who don’t relish the idea of wearing a plastic appliance, it’s often possible to bond a wire retainer to the back surfaces of the teeth, where it’s invisible. No matter which kind you choose, wearing a retainer can help keep your smile looking great for many years to come.
If you have questions about teeth grinding or orthodontic retainers, please contact our office or schedule a consultation. You can read more in the Dear Doctor magazine articles “Teeth Grinding” and “The Importance of Orthodontic Retainers.”