Posts for: June, 2019
You’re satisfied with your smile appearance except for one thing — your teeth aren’t as white and bright as you wish they could be. So, you’ve decided to do something about their dull yellow color.
You’re also thinking about buying a whitening product you can use yourself rather than a professional application. But you still want the answers to two questions: are home whitening kits safe? And, are they effective?
By and large the answer to the first question is yes — if you use it as directed. The whitening agents in FDA-approved products are in safe proportions to other ingredients and won’t cause any major health issues. That said, if you go beyond the instructed dosage you could damage your teeth, especially your enamel, and cause long-term problems with your dental care.
In addition, if you (or a family member) are still in your early teens, you may want to wait until you’re older. Although most permanent teeth have come in by puberty, their enamel still needs to mature. The chemicals in a whitening kit could be too strong for their under-developed enamel. It’s best to get our advice on whether your teeth are mature enough for whitening.
As to their effectiveness, home whitening kits should perform as their labeling indicates. But there are some differences in effects between a home kit and a professional application.
Although a home kit usually uses the same whitening agents (like carbamide peroxide), its strength is much lower than a professional treatment — about 10% of volume compared to around 30% in clinical solutions. This means it will take much longer to achieve the desired whitening effect that a professional application can in fewer sessions, and with less precision. In addition, home kits are only effective on surface staining of the enamel — discoloration within a tooth requires treatment by a dentist.
You can get satisfactory results from a home whitening kit. But before you make a purchase, consult with us first — we can advise you on what to look for in your purchase, as well as determine if your teeth can benefit from whitening at home.
If you would like more information on teeth whitening, 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 Whitening Safety Tips.”
One of the most widely used forms of dental imaging is the bitewing x-ray. So called because of the shape of the device that holds the exposable film a patient clenches between their back teeth, the bitewing x-ray is an effective means for detecting the earliest stages of tooth decay.
These early signs are small lesions on a tooth surface caused by mineral loss in the enamel. While we can identify them on front teeth through visual examination or bright lighting, they’re nearly impossible to see on the biting surfaces of back teeth. The bitewing x-ray solves this problem.
During the procedure, a narrow beam of x-rays is directed at the back teeth area. Since X-rays can transmit through solid matter, they pass through the teeth and gums to expose the film attached to the bitewing assembly.
X-rays pass through matter at different rates depending on the density of the tissue — a slower rate for harder tissues like teeth and bone and a faster rate for soft tissues like the gums. As a result, x-rays through teeth expose less of the film and appear as a lighter image than the gums. This difference is so precise even a tooth’s softer dentin appears slighter darker than its harder outer enamel.
This precision helps us identify decay lesions. Because the lesions on the enamel are less dense than the normal enamel, they’ll appear as dark spots. By detecting them at this stage we have a better chance for reversing the effects of decay or at least minimizing damage that’s already occurred.
Because x-rays emit radiation, there’s a natural concern about over-exposure and we go to great lengths to reduce it. Children may undergo a bitewing x-ray twice a year for developing teeth, while adults with healthy teeth are typically x-rayed just once a year. Advances in digital film and other technology have also helped lower the exposure rate.
Today’s standard 4-film bitewing x-ray produces about four days worth of what we receive on average from normal background radiation, so the health risk is quite negligible. The benefit, on the other hand, is much greater — the early detection of tooth decay could ultimately save a tooth.
You're not just a patient to your dentist—you're also a partner for achieving your best oral health possible. And it takes what both of you do to achieve it.
No doubt your dentist always strives to bring their "A Game" when providing you care. You should carry the same attitude into your personal oral hygiene—to truly master the skill of brushing.
Like its equally important counterpart flossing, brushing isn't mechanically complicated—you need only a minimum of dexterity to perform it. But there are nuances to brushing that could mean the difference between just adequate and super effective.
The goal of both brushing and flossing is to clean the teeth of dental plaque, a built-up film of bacteria and food particles most responsible for dental diseases like tooth decay and periodontal (gum) disease. Brushing removes plaque from the broad front and back surfaces of teeth, while flossing removes it from between teeth where a toothbrush can't reach.
While a lot of cleaning tasks require bearing down with a little "elbow grease," that's unnecessary with brushing—in fact, you may increase your risk of gum recession if you brush too vigorously or too often. All you need is to apply a gentle, circular motion along all tooth surfaces from the gum line to the top of the tooth—a thorough brushing usually takes about two minutes, once or twice a day.
Your equipment is also important. Be sure your toothbrush is soft-bristled, multi-tufted and with a head small enough to maneuver comfortably inside your mouth. Because the bristles wear and eventually lose their effectiveness, change your brush about every three months. And be sure your toothpaste contains fluoride to help strengthen your enamel.
One last tip: while it may sound counterintuitive, don't brush immediately after a meal. Eating increases the mouth's acidity, which can temporarily soften the minerals in tooth enamel. If you brush right away you might slough off tiny bits of softened enamel. Instead, wait an hour before brushing to give your saliva time to neutralize the acid and help re-mineralize your enamel.
Unlike your dentist partner, your role in caring for your teeth doesn't require years of training. But a little extra effort to improve your brushing proficiency could increase your chances for a healthy mouth.
If you would like more information on best practices for personal oral hygiene, 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 “10 Tips for Daily Oral Care at Home.”