Posts for: December, 2015
Contrary to what you might think, a knocked out tooth doesn’t inevitably mean tooth loss. Time is of the essence — the shorter the interval between injury and replanting the tooth, the better the tooth’s long-term survival. The longer the interval, on the other hand, the less likely the tooth can survive beyond a few years. That phenomenon is due to the mouth’s natural mechanism for holding teeth in place.
The tooth root maintains its attachment with the jaw bone through an intermediary tissue known as the periodontal ligament. Tiny fibers from one side of the ligament securely attach to the tooth root, while similar fibers attach to the bone on the opposite side of the ligament. This maintains stability between the teeth and bone while still allowing incremental tooth movement in response to mouth changes like tooth wear.
While the ligament fibers will attempt to reattach to a replanted tooth’s root, the longer the tooth is out of the socket the less likely the fibers will fully reattach. An “ankylosis” may instead form, in which the root attaches directly to the jaw bone without the periodontal ligament. In this situation the body no longer “recognizes” the tooth and begins to treat it like a foreign substance. In all but the rarest cases, the tooth root will begin to resorb (dissolve); at some point (which varies from patient to patient) the attachment becomes too weak for the tooth to remain in place and is lost.
Ideally, a knocked out tooth should be replanted within 5 minutes of the injury (for step-by-step instructions, refer to The Field-Side Guide to Dental Injuries available on-line at www.deardoctor.com/dental-injuries). Even if you pass the 5-minute window, however, it’s still advisable to attempt replanting. With a subsequent root canal treatment (to remove dead tissue from the inner tooth pulp and seal it from infection), it’s possible the tooth can survive for at least a few years, plenty of time to plan for a dental implant or similar tooth replacement.
If you would like more information on treatment for a knocked out tooth, 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 “Knocked Out Tooth.”
Want to know the exact wrong way to pry open a stubborn lid? Just ask Jimmy Fallon, host of NBC-TV’s popular “Tonight Show.” When the 40-year-old funnyman had trouble opening a tube of scar tissue repair gel with his hands, he decided to try using his teeth.
What happened next wasn’t funny: Attempting to remove the cap, Fallon chipped his front tooth, adding another medical problem to the serious finger injury he suffered a few weeks before (the same wound he was trying to take care of with the gel). If there’s a moral to this story, it might be this: Use the right tool for the job… and that tool isn’t your teeth!
Yet Fallon is hardly alone in his dilemma. According to the American Association of Endodontists, chipped teeth account for the majority of dental injuries. Fortunately, modern dentistry offers a number of great ways to restore damaged teeth.
If the chip is relatively small, it’s often possible to fix it with cosmetic bonding. In this procedure, tough, natural-looking resin is used to fill in the part of the tooth that has been lost. Built up layer by layer, the composite resin is cured with a special light until it’s hard, shiny… and difficult to tell from your natural teeth. Best of all, cosmetic bonding can often be done in one office visit, with little or no discomfort. It can last for up to ten years, so it’s great for kids who may be getting more permanent repairs later.
For larger chips or cracks, veneers or crowns may be suggested. Veneers are wafer-thin porcelain coverings that go over the entire front surface of one or more teeth. They can be used to repair minor to moderate defects, such as chips, discolorations, or spacing irregularities. They can also give you the “Hollywood white” smile you’ve seen on many celebrities.
Veneers are generally custom-made in a lab, and require more than one office visit. Because a small amount of tooth structure must be removed in order to put them in place, veneers are considered an irreversible treatment. But durable and long-lasting veneers are the restorations of choice for many people.
Crowns (also called caps) are used when even more of the tooth structure is missing. They can replace the entire visible part of the tooth, as long as the tooth’s roots remain viable. Crowns, like veneers, are custom-fabricated to match your teeth in size, shape and color; they are generally made in a dental lab and require more than one office visit. However, teeth restored with crowns function well, look natural, and can last for many years.
So what happened to Jimmy Fallon? We aren’t sure which restoration he received… but we do know that he was back on TV the same night, flashing a big smile.
If you would like more information about tooth restorations, please contact us or schedule a consultation. You can learn more in the Dear Doctor magazine articles “Porcelain Crowns & Veneers” and “Artistic Repair Of Front Teeth With Composite Resin.”
If you’re pregnant, you may find yourself pondering decisions you didn’t have to think about before. Should you have that glass of wine… or skip it, because of the alcohol; go for the sushi… or avoid uncooked foods; take the pain reliever… or live with the headache. And if you have a toothache — or even if you’re overdue for a checkup and a cleaning — you may also be wondering whether having dental treatment (especially treatment that might involve local anesthetics) is safe for you and your developing baby.
Fortunately, a study that recently appeared in the Journal of the American Dental Association (JADA) should let expectant moms breathe a little easier. The research concludes that it’s safe for pregnant women to undergo dental treatment, including procedures that use local anesthetics.
And that’s good news indeed, because while maintaining good oral health during pregnancy is critical for the developing baby, many expectant moms experience problems during this period.Â Some common issues include a higher risk of tooth decay due to increased carbohydrate consumption, and sore or bleeding gums from a condition called pregnancy gingivitis.
According to the study’s lead author, Aharon Hagai, D.M.D., "[Pregnancy] is a crucial period of time in a woman’s life, and maintaining oral health is directly related to good overall health." Yet, as Dr. Hagai notes, pregnant women sometimes avoid the dentist even if they have a problem. So his team set out to determine whether having dental treatment with anesthesia affected the outcome of pregnancies. They compared a total of 1,004 women, some of whom had dental treatment with local anesthesia, and some who did not.
The research showed there was no significant difference between the two groups. This applied in terms of both major medical problems (such as cleft palate, heart defects or cerebral palsy) and other issues, including low birth weight and preterm delivery. Dr. Hagai summed it up this way: "We aimed to determine if there was a significant risk associated with dental treatment with anesthesia and pregnancy outcomes. We did not find any."
So if you’re pregnant, there’s one less thing to worry about. Go ahead and schedule your routine dental check up — and remember that it is particularly important to have cleanings during pregnancy. Â If you experience changes in your oral health, don’t hesitate to come in for an office visit and cleaning; that way, you can make sure your hormonal changes are not playing havoc with your gums. There is an old saying in some cultures that for every child a woman has, she loses a tooth. Don’t let that happen to you.
If you have questions about oral health and pregnancy, please call our office to schedule a consultation. You can read more in the Dear Doctor magazine article “Expectant Mothers: Dental facts you need to know” and “Pregnancy and Oral Health.”